Ford 302 popping through exhaust if the 1961 - 1966 F-100 & Larger F-Series Trucks - Popping through the carb! HELP!! - I have a 66 F100 4wd. If fresh air is 87-ford-mustang-SOLD! mods: 3:73's, off road h-pipe, b303 cam in gt- 40 motor w/ Power Plus intake, edelbrock 70mm tb & egr spacer, 72mm C&L, bbk long tubes, tremec Car exhaust systems and car engines make whirring, clicking, or sputtering noises if there's a faulty belt, alternator, water pump, or tension pulley. Is this something you just put together or have been playing with. Thought I had it, but alas seems to change its mind if I look at it funny. 27 posts · Joined 2005 Add to Loose exhaust pipe or muffler. . 0 1988 Ford Mustang LX 5. The whole time it is at about 30% power. intake opens and it pops pressure back. 8/351W) - popping through intake - just found an 86 f150 with a efi 302 in it. THE EGR WAS REPLACED ABOUT 1 HOUR AGO FOR A POSITION ERROR. that is good (compression stroke), So, what should I do next? Engine is a stock 302 bored . 0 all the way through the 1990s. When the 2011 Mustang GT came out, we figured that's it, they can't make this car 302 engine noise, pistons, valvetrain?. If you hear 1987 - 1996 F150 - Best exhaust system for the 5. This often happens when unburned fuel is able to escape through the exhaust valve. 73 8. 302 HO, Trick Flow Exhaust popping on decel is usually caused by a transient rich condition (i. Jump to Latest I thought for sure the exhaust had come loose some way some how, so i pull over and let it idle while i look under the hood. 341 posts · Joined 2003 2015 - 2020 Ford F150 - F150 5. It pretty much sounded like a sounded like a 50cal machine gun going off. I have a 2019 SuperCrew F150 XLT w/5. Real short video to show how it sounds and what to look for here @etrtruckcente Hi Big problems with my 2011 6. How It Works. The original version of this engine was used Customer: Cold and accelerating, it stalls at idle Mechanic's Assistant: Is there anything else the Ford Mechanic should know about the trucks condition or any other issues its experiencing ok i have a 302 block bored 30, trickflow cam about the same stats as a e303, hurricane mid rise intake a holley 750, procomp billet hei distr, in between 5500 and 5800 my Seemed to be ok then I entered some road works and the speed limit dropped to 50MPH the car was fine, then when I went to accelerate after the road works and the car 1990 Ford Mustang LX 5. Long story short sent the injector back it had Carb popping then loss of power ford 302 08-04-2015, 09:41 PM. I Could it possible be a coil or my regulator. An actual compression test shows zero The timing is at 8 degrees , screwed the air screws to no help 2. 302 AFR 185's 9:1 Edelbrock 600 Autolite Plugs Gapped @ . It's more noticeable at slower The stock '79 302 engine was probably only about 165HP, dual 2" would be plenty for that. (loud) but doesn’t come from the exhaust. when u blip the In a 1993 Ford Ranger Splash. in this video I describe how I repaired the popping coming out my exhaust on my 1970 chevelle. Exhaust Sounds like an air/fuel or timing problem to me. It will sit and idle there all day long. It will clear out if I step on it and usually it backfires through the intake. The car is only driven once or so every few months and then for only starts great but with any throttle it backfires,sometime thru the carb, sometimes thru the exhaust. The lower the gear, the more the engine Another note, when it does start the popping sound the exhaust smells of kerosene, and a gray color smoke puffs out. 7. Starts and idels but rough. For these reasons, you should fix the problem to restore the condition of your car. May pop a lean code on 02 the worse it gets. Backfiring through the exhaust can result from different causes. 5/460) - 429 popping/backfiring out exhaust - But its not as simple as the title. 1/370, 7. While Don't Stall on Exhaust Leak Repairs If the popping sound is more rhythmic and occurs more frequently as you rev the engine, you may want to look for an exhaust leak. We usually refer to an exhaust backfire as a "backfire", and backfiring through the carb as "spitting" or "coughing". anyone Can exhaust collector gaskets going bad leak out exhaust pressure and at certain load ranges of the engine cause the back pressure to pop out of the exhaust instead of just It bucks and spits and pops all the way through the rpm band and when you let off the throttle, huge backfires occur out the tailpipes. 80 or a "cherry bomb" exploding out of your exhaust. 6K views 8 replies 2 participants last post by Steve340 Mar 16, 2007. 040 ED Curtis I have a 1971 Ford 302 . Notice the large round hole for the pushrod. ) Poor fuel delivery due to bad fuel pump, clogged filter or bad fuel pump wiring. It sort of sounds like a backfire (loud) but Take out #1 spark plug, hand turn the crank until it's dead nuts on top of the stroke (use a 6" piece of 1/4 " dowling to be able to tell when it's up) with both exhaust and intake Small Block Ford 260, 289, 302 order is 1-5-4-2-6-3-7-8 Verify the firing order shown above is correct for your engine and that the dizzy is not 180* out. FFR4373RD MK3, That violent popping sound from your exhaust system will undoubtedly turn some heads. remove the air filter and look down the front barrels of the carby. Not a normal engine knock but more like air escaping under pressure. 0cr 4. Doesn’t seem to be directly tied to rpm but gets worse with load/throttle. - Engine idles great, is I put a new Edelbrock 1406 on, ran it solid for a week and a half. But what causes backfiring through the exhaust? Backfiring through the exhaust can occur for a plethora of reasons, including a Small Block V8 (221, 260, 289, 5. Put the minute Engine idles & runs perfectly when cold, responsive to the gas pedal, plenty of power, but as it warms up after 15 minutes of driving it starts to sputter and misfire. Let's say I'm in 1st or 2nd gear, accelerating normally, and then I floor it, I feel We would like to show you a description here but the site won’t allow us. Firing order is correct, Duraspark HEI, new This can be caused by a clogged catalytic converter, a restricted exhaust system, or a malfunctioning EGR (Exhaust Gas Recirculation) valve. 0/302, 5. The motor is stock apart from a Holley carburetor. 79 kmino Discussion starter. Manifold leaks allow air to enter the exhaust system, creating a leaner air-fuel mixture. Ok, after adjusting the timing to where it is really advanced, the problem seems to be a lot better but still pops out the carb when you floor it from a dead idle. 0/302 - I want to upgrade my exhaust to get a nicer deep throaty rumble without the crackly sound some glasspacks give In this video we diagnose an engine misfire on a 2007 Ford F-150 setting a cylinder #2 P0302 misfire DTC. You can hold the pedal I have an sbc that was broke in on the dyno about 2weeks later here comes this poppin/backfire out the exhaust i took the whole car back to shop that build the motor. Watch from the best troubleshoot a Diesel engine popping through the intake. Had engine start & idle, then shut it off only to not be able to get it started again. Ford Truck That throttle body breathes through a Ford Racing Cobra Jet Cold Air Intake Kit, M-6550-M50BEXH BOSS 302R Exhaust Cam (pair) M-6550-M50BINT BOSS 302 Intake Cam Find out more about the 2012 Ford Mustang Boss 302 in this first drive by the automotive experts at Motor Trend. cast heads, Edlebrock intake, Holley 4150, stock exhaust, Pertronix ignition, stock coil. It stalls until you cram on the pedal. If you would like to help support the channel you can do so by Popping through the exhaust is usually a lean condition which causes an over-heated exhaust. Now it runs When you hear a backfire, you need to determine whether it is backfiring out the exhaust or back up through the carb. It runs fine for a while then is feels like its missing and then "foomp" backfires thru the carb. bad cams on these arn't real common as the roller lifters don't wear much, but Ford offered both the standard output and high output versions of the 5. No flames but I can see air blow some fuel back i've got a '90 302 out of an f250 in a 83 jeep cj8. 0 - RIP :crying: 1965 Ford Mustang 289 I was driving lastnight and my truck started to make loud popping/thud sounds from the intake. pretty much everything is brand new. Extremely common on these models. Drained all of Nothing like the sound of a Boss 302 motor but there's two cars that you haven't owned and driven in your life you're a must car guy if you haven't had a 67 to 69 Z28 Camaro New designs starting with the 2008 NPP keep the valves open during decel to make more noise. Jump to Latest 35K views 13 replies 11 participants last post by Jebchevelle Nov 5, 2009. Did it throw any codes? There is a procedure you can do with a multimeter to check the primary and What causes it. Now getting a backfire through the carb (seems to always be the one over the 5/7 Pre-Power Stroke Diesel (7. There are no signs that the engine wants to fire up, it just continues to crank. Less than 49K original miles. By delaying or retarding the ignition timing, you can Fixing the popping under deceleration! A while ago I installed the fitech go street EFI on my 1975 Ford bronco and I have loved it. However, at idle it pops out of the exhaust every once in a while. Kevin 1965 Fastback-Scat 331, Dart heads, FPA headers, Air Gap intake, 650 Ultra DP, Cobra pan, Lunati VooDoo cam 61003, C-4, 10 inch converter, Reverse manual valve it sound like its a lean backfire. No real mods (K/N, Flowmaster exhaust). Ryan- Shutup, lol. A forum F-250 & F-350 1986-1997 & Other Ford Trucks. What I found. E99 7. sometimes. Got out and checked, no popping. Not sure if that's an issue or not. Adjust the timing. What Causes A Backfire In Your Exhaust. chvyscott67 Discussion starter. Missing, popping thru exhaust bad on pass side, ocasionally backfires thru carb, have checked spark, timing, pulled valve cover to see if I had Customer was driving when he heard a bang, then had no power. Yesterday I noticed a bit of a big issue: at idle, I have rather noticeable pop through the carb/intake. Advancing I think, lol. 6 RR (3/4 turn past zero lash TDC) Low rise dual plane intake Edelbrock 600 MSD 6 digital with 1973 - 1979 F-100 & Larger F-Series Trucks - "Popping" noise in exhaust - My truck when idling has this popping sound coming out of the exhaust. In park, if I hold the throttle at a consistent RPM I get a lot of popping out the Customer: 1968 Ford 302 - runs rough, and pops when hit throttle, including stumbling and bogging under load. popping i'm not sure what it is but i took a video of it today. and my exhaust makes a popping noise at idle, itll run smooth for a little bit then pop a few times then run smooth and then again it will pop. 0-Liter Engines. I also Lastly, exhaust popping can occur due to a delay in ignition timing – that’s how most anti-lag systems work and also how ECU tunes make cars start crackling and popping. Most owners seem to like the popping (kinda like most Harley owners like . HI i live in the Netherlands and i have a 1971 Ford F100 2 wheeler with One day out of nowhere I noticed a light exhaust pop on my way home at lunch. 1986 MustangLX 302 5spd. Or is it an old motor that just started popping thru the exhaust? If it old and just started backfire thru the exhaust. It can be a The engine becomes less efficient, and the popping sounds can be irritating. Most the time, it's a vacuum leak,. Prob cost ya $150-200 in parts max. But one of the annoying t Ok my truck pulls like a son of a gun low end but once the rpms get to 2800 or above you can hear a popping threw the exhaust would that be the injectors and you can My exhaust pops when going back down but mine is pretty open flow. 00-inch stroke, forged steel Meet the 2012 Ford Mustang Boss 302, the best, most well-rounded Mustang ever. Things I've replaced since misfires started-Plugs, plug wires, all new ignition (12* btcd), new holley 650dp, fuel pump (6psi), new heads, Exhaust Popping And ‘Blueing’ One (somewhat inadvertent) effect exhaust popping has on your motorcycle’s exhaust is the ‘blueing’ effect. Pretty sure the timing is at least close The reason that you had the BOOM-BOOM in the muffler is likely because, when you lost ignition power, the engine continued the intake-compression-ignition-exhaust cycle as you When it’s shifted into drive or reverse though it bogs down a bit and makes a “popcorn”ish popping sound at a random interval. Checked fuel pressure - good, checked timing, initial 12 degrees (tried from 6 to 20 and did not solve problems) new plugs No fewer than five 302-based small blocks are currently available as crate engines. HI i live in the Netherlands and i have a 1971 Ford F100 2 wheeler with For inline four- or six-cylinder engines, the intake manifold is installed on the side. Find out more about the 2012 Ford Mustang Boss 302 in this first test by the automotive experts at Motor Trend. Once the engine heats up some it runs good. It happens more often when cold and when cruising in a higher rpm. Since the engine was ok before the carb swap, and you think Nope. - I wanted to share my findings from my experience with chuffing that B. Compare that to the tight slot on the ‘64 head. And at the tailpipe, I can hear a 1929 Ford Model A Woody Wagon For consignment, a 1929 Ford Woody wagon showing 9,584 miles which are not actual. A damaged exhaust system is another common cause of car popping noise during acceleration. - posted in Engine: Gday guys, I need some help. 7 Cummins with 59000 mi. Will run smooth and then start popping thru intake/exhaust. 429 Got my new build fired up today, but am having issues with it backfiring/popping very loudly and consistently through exhaust and carb. U. Ran cct with AE to find cylinder 3 failing. Jump to Latest I pulled over and noticed a popping sound coming thru I have a 1970 Boss 302 that ive had for 38 years. Along these same lines, I want to make sure to size my exhaust correcty on my 64 Fairlane. Ford 302's and 351's, but this attractive wagon has something Motor had no issues until I started it after sitting in the garage for 1-year, runs rough & "backfires" through 1 side of the header exhaust (passenger). Come join the discussion about performance, production Getting an insta shot of fuel when hitting the throttle. My engine is popping through the exhaust at idle. 0L and Page 1 of 2 - 202 popping through exhaust at idle. in the cetre u will see a phillps head screw holding the squirter in . 3L Power Stroke Diesel - Popping through intake - I was cursing along at about 45mph and out of no where I start hearing the engine makeing a very loud Vacuum lines are new and running to the right places. Contact Us New 1994. Try to retard the timing I have a carbureted 302, and I am getting a rythmic popping noise through the carburetor. This WELL IT ALWAYS AMAZES ME WHAT PARTS FORD SELLS. On the highway, it sails down the road at speed, but when the road Okay but the popping sounds like 1 cylinder is out of time or just not firing off like it should be so then the fuel pops off as the exhaust valve is opening or something. If your car or truck is equipped with a Holley four barrel carburetor and stumbles upon -302-E-street aluminum heads with roller rockers-Dual-plane aluminum intake-4-barrel 670 cfm Holley (vac. heha:, I didn't have it up on #1 with both valves closed (easy to do when you're Have yet to get a good running condition with my Sniper setup. My 302 has new Dont put to much stock in this but, to me popping would seem to be unburned gas igniting in the exhaust which may be normal on deceleration and amplified with a less 1987 - 1996 F150 & Larger F-Series Trucks - Motor making popping noises when accelerating - Been working on getting this 91 f150, 302 to run good, replaced motor, cap, rotor Excessive exhaust smoke; Conclusion. I found a used Boss 302 H pipe on the forums and had installed on my Mustang GT. D0VE-A Block 429 with D0VE-C heads, FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - Popping/Backfire out exhaust pipes - Ok, When I'am going down the road at a steady speed theres loud i run a twin 2 1/2 inch system on my au xr8 with lukey race magnum mufflers and i get it too, more so when the motor is cold and you take your foot off the pedal ,i am guessing it Ford 351C, Automatic Transmission, Mild Cam, Holley Sniper EFI with Ignition Box & Distributor. 5 - 1997 7. not that often on cold start. Look at the color of the spark plugs, they should be 454 chevy with HEI giving me fits. 75 Stars and stripes with ford 302 4 barrel holley started popping through carb, and loss of power during An exhaust tail pipe backfire is caused by an excessive amount of unburnt fuel remaining in the exhaust system or fresh air being allowed to enter the system which ignites a small amount of unburnt fuel. Right now it has a slight shudder in the engine, and it makes a popping noise out of the exhaust. The Boss 302 H pipe is unique in that it provides side I spent the winter fixing everything. 5/460) - 460 small miss and popping in exhaust - Hey Guys, I have a 85 460 that when I hold the engine at a fast idle it has a small It seems that all modular engines have a distinct off beat sound/note at idle. The manifold's job is to provide a mixture of air and fuel to the engine's cylinders. I have a stock '74 302 out of a mustang in a '71 Galaxie 500. I just tanked up Popping, backfires thru exhaust at 4500 RPMs, Clueless! Jump to Latest When revd in park starts sputtering and backfiring through the exhaust and falls on its face. Seriously, got any suggestions? Small Block V8 (221, 260, 289, 5. Seen a lot of posts about I have an s-trim on my stock 91 Saleen and it has developed a problem. 00-inch diameter cylinder bore with its 289-cubic-inch stablemate but used a longer, 3. Please enable javascript before you are allowed to see this page. ) Failure of the MAF, BAP/MAP (Baro or Manifold Air Pressure, same sensor, different name), ACT (air i've got a '90 302 out of an f250 in a 83 jeep cj8. Steps so far: 1. Over the years, it improved, but any car lover knows Backfiring through the carburetor is often times a sign the the engine is running lean and 'chasing fuel' into the intake manifold. Drove a few more miles, checked again, Leaking exhaust manifold gaskets or cracks in the manifold itself can also contribute to a popping sound in your exhaust system. The popping is unburnt fuel and could be a misfire, sounds to me like its running a little lean. secondary) with #65 jets-Ready-to-run distributor, 8. It is good for your exhaust to get out on the highway and blow all of the water out. Double checked on #1 for dist. It is not pre-ignition. 5mm 50 ohm The few times I've gotten it up to around 80 and 90 I hear a lot of exhaust popping. i know that chambered mufflers like slow masters and some others have a more noticeable pop than the I have a 2019 f150 with 13000 miles on it an I’ve noticed it’s making a clicking noise on light acceleration and also makes a irritating pop noise when leaving a red light at a certain Is it normal for there to be popping in the exhaust system at crusing speed/low RPM. i can feel the burst of exhaust with my hand. -1970 Boss 302 Grabber Green-1968 Fastback 347 t5 650dp 11. You may have to pull the upper to get to it. Just today it started a loud popping noise coming from the air intake area. I have what sounds like a cross between an exhaust There are many variations of the Ford 302 cubic inch engine, but all variations use the same 302 firing order and engine layout design and engine layout design. LOG IN; REGISTER; Forums. from The block is an 85 that was previously TBI but now has an Edelbrock 1405 carb on a ford stock aluminum manifold. Replaced the pushrods (they were 4 different lengths for some reason) with 350cruiser, If I'm not mistaken, a pop out of the carb is an idication of a lean mixture or improperly adjusted valves. It has been a trouble free daily Popping through the intake. 9L) - Chuffing/Popping from intake and exhaust. I'll be checking the FICM connections, and the Big Block V8 - 385 Series (6. or damaged convertors that Hello everyone, I seem to have a slight problem (maybe not so slight). E. 0, AOD. Looking at a Ford 3000 gas that is popping through the exhaust, thinking maybe stuck or burn"t valve? thanks Dave (800) 853-2651. the guy said it will run on its own but if you push the gas 87 E-250 302 EFI Popping Mystery. Try blocking off the air inlet a little and do your load tests to see if enriching the A/F would help. In some The popping is unburnt fuel in the exhaust that ignites. When Ford originally introduced it in 1982, the Window 302 made Hearing a popping sounds from your exhaust can be more than just obnoxious, as it could be warning you of a pressing issue in your exhaust. 5 out idels fine but hit the gas and it pops back thru the carb? Save Share Reply Quote Like. usnavyame70 Discussion starter. which is un-metered air getting to the combustion chamber. The most common cause is an ignition timing issue, which. Any ideas for what Damaged Exhaust System. 8 rear. SHOP NOW. CEL came Air Intake, Engine Electronics, Ignition & Exhaust 05 Escape V6 Popping Sound Thru Intake/Air Box. been through valve I have a new (rebuilt) 302 with a holly carb that barely runs. The exhaust When I crank the car for a while, I get loud pops that sound like a backfire through the intake. The Fenske starts explaining how these exhaust pops occur at around the three-minute mark. This is a very common problem with cars today and the fix can be very e On cold start my car (93' LX 302) has rough idle, hesitation under acceleration, also pops through the intake under acceleration. (12/24) I still have this problem. 0 Engine popping noise? - Hello, So i started to notice my engine. So here's the problem. I had a new 3" exhaust put on which replaced the previous 2. Moving the screw for the hose clamp gave me enough so it will start and run but when I put the timing light on it I'm not seeing the timing mark anywhere near the timing indicator through 302,Edelbrock 650( just came in today) I started the car and it idles ok but when you try to give it gas it pops through the carb constantly. I am having horrible drivability problems. Look for low pressure or fluctuating I have a 351 cleveland that has developed a backfire or popping through the carb at around 5000rpm. When you start the car, it pops thru the right side exhaust pipe at idle. The Less back pressure = more popping. The exhaust manifold is on the side (or sides) of your 1973 - 1979 F-100 & Larger F-Series Trucks - popping sound (loud) thru carburetor - All of a sudden, going down the road, my truck starts popping hard thru the carburetor. Jump to Latest 4. idle is at 1000 rpm and the engine pops under normal driving and under heavy load. When I give it some agreed, wiped lobe and it won't open enough on exhaust. 24lb I have now run both tanks 2x. Timing is set, checked with a timing light. When you purchase through links on our site, we may Arguably, Ford’s most ubiquitous engine, the 302’s early iterations, only produced 140 horsepower, partly because the exhaust system didn’t have the most optimized flow. It seems like when my car is cold there is something holding it back at low rpm's. A backfire is caused by a combustion or explosion that occurs when unburnt fuel in the exhaust system is ignited, even if there is no flame in the Cure The Bog And Sluggish Response On Your Holley Four-Barrel Carburetor, By Properly Adjusting The Accelerator Pump Assembly. 83 F150 4wd 302 carb'd. It has a 89 302 block but has been changed from EFI to carbureted backfire thru the exhaust. As soon as I give a little more throttle the engine just growles as I 2015 - 2020 F150 - Strange exhaust "pop" after acceleration let off - I looked for this in the forum, but didn't find anything. Beings it only happens while dethrottling, it eliminates air leaks. To do this, the intake valve as others have covered, could be a vacuum leak. Almost like a miniature backfire. Like most Ford V-8 engines the cylinder numbering is The original 1968 Ford 302, produced in Windsor, Ontario, Canada, shared a 4. First symptom, pressing on the gas pedal to accelerate The diagnosis and fix for the dreaded popping (popcorn maker) noise on acceleration in 2018 and newer Ford 5. I have I recently purchased an 82 Mazda RX-7 with a Ford 302 from what I believe to be a late 80s F-150. I don't know much about the 5. Since then i have If it is vomiting through the dipstick tube, then the crankcase is getting pressurized. I rebuilt a 302 (out of a 1980 F-100) for my 66' mustang a few months ago and have put about 7000 popping through exhaust. If OK, so having a bear trying to get the SBC running smooth. Does the engine have any type of PCV setup? Usually they leak to an adjacent cylinder or mix into the cooling system. The exhaust system carries exhaust gases away from the engine and out the tailpipe. I have checked the dizzy and it is advancing enough (mechanically). 11 benchseat A forum community dedicated to Ford performance owners I had a similar situation and it turned out to be a rotten/broken vacuum hose on the underside of my upper intake. 0 Engine "popping" sound - Just over 2000 miles on my '19, just recently started hearing an audible pop or maybe a single knock after accelerating "Sugar", my 1967 Ford F250 2WD Camper Special, 352FE, Ford iron "T" Intake with 1405 Edelbrock, Duraspark II Ignition, C6 transmission, front disc brake conversion. check your iat sensor on the intake (passenger side one 6th cylinder bank) before you spend the money on changing it, unplug it and drive it around for a day or two. Auto, I finally fired up the '69's 302 today for the first time after the rebuild. D. 3 rough running and popping through exhaust. I also noticed My gauges on the inside fluctuating very very minimally though. Mostly from the right side. I did a relative compression test and found #2 cylinder was low. Loud and constant like rocks hitting my windshield almost. 8/351M, 6. 302 HO (carb), t-5 trans, 3. Once it's started and warmed up, it runs perfect. 302 explorer shortblock out of a 1998, gt-40p heads, TFS-1 cam, gt-40 intake. Still getting some sputtering from the exhaust, 302 roller Trick flow stage 1 cam Twisted Wedge 170 heads, o-ringed 1. 1978 302 timing 351c popping through carb. suddenly letting of the throttle when shifting), allowing unburnt fuel to get into the exhaust and If the engine is too far advanced, it will pop through the carburator. If it's too far retarded, it usually backfires through the exhaust. While exhaust popping can range from a minor annoyance to a serious concern, understanding its causes and solutions helps you make informed decisions about your vehicle’s maintenance. 0/429, 7. ) Leaking exhaust gases from EGR valve at WOT or EGR opening when it should not be open. Ive solved most all the problems over the years but one. The torque specs for a Ford 302 exhaust manifold are 80 lb-ft Popping through exhaust. I got lots of suggestions from everybody here and tried just about everything. I just figured out i have one bent pushrod on a exhaust valve and one bent pusrod I noticed after the car warmed up and on the way home, the car would pop and backfire though the exhaust on deceleration. It was worse going down the hill, but also did is Exhaust popping on decel is usually caused by a transient rich condition (i. I have an 02 mustang GT. One common cause of car popping sounds is a loose exhaust pipe or muffler. 1. One more thing it backfires thru the exhaust after OK at cruise rms, when I romp it, SOMETIMES it will bang (backfire) hard through the intake (and then go). e. You cram on the pedal and it Footage taken from Holley Carburetor Installation & Tuning DVD How to fix a backfiring engine by showing you the most common symptoms and solutions. 5" inch exhaust, WBO2 sensor bung in roughly the same location. O. I was expecting to find the I posted earlier about my 390 backfiring through the exhaust when you let off of the gas. Engine starts and idles fine. But basically, as you probably know, the way a normal four-stroke gas engine works is that it sucks in fuel Javascript is required. ") is a high-performance "small block" 302 cu in (4. An off-road midpipe should get you the results you want, but with Under WOT, it is far less prone to the popping, but seems down on power, and seems to struggle to pull through the RPM band, though it gets there eventually. Post by FreakinFord » Fri Sep 10, 2004 8:30 am. C. With a trained ear, sometimes It will pop like an SOB. I replaced the plugs, and the #5 and #6 wires are not close to each If your Chevy 350 is popping through the exhaust at idle, it could be due to a few different things. Ensuring proper exhaust flow is popping through intake. been through valve 2015 - 2020 F150 - 5. -BBK Its your upper intake plenum leaking. The shudder is yes it would, anytime the vanes are stuck all the way open or closed,, the turbo will make all kinds of noises,,, my wires going to my vgt solenoid, shorted out, and my turbo made 1987 - 1996 F150 & Larger F-Series Trucks - 95 302 backfires through intake - 95 f150, 302, auto trans, backfires through the intake at 4000rpm under load while driving, it idles I'm getting an annoying popping and crackling noise from the exhaust when the car is decelerating with the engine holding it back (4-speed). Video inside I'll try and keep this as short as possible. In this case the concern was caused by a loose spar 335 Series- 5. 3L IDI & 6. 8/351W) - popping through carb - A little background. The popping is coming from unburnt fuel entering the exhaust system. 0 At about 3500rpms it starts to pop out the exhaust and then if I mash the pedal it hesitates and takes off and then pops like crazy and does seem to want to rev above 4500ish. if the engine is left for a while to warm up then driven is the problem still present: that would point to the choke not functioning Pop/Backfire Thru Exhaust !! Jump to Latest 27K views 13 replies 6 participants last post by chvyscott67 Mar 6, 2012. Fresh 289 Suddenly Popping Thru Exhaust, Running Rough 1979 Ford F150 custom, 302, C4, AC, tilt wheel, main transportation 10:1 compression - forged pistons - 600cfm holley 4150 - ford full length headers - popping happens at idle only, about once every 5-10 seconds when warmed up. i had a motor pop from a worn cam as well but everything is new on this one. 10 The Ford Barn > General Discussion > Model A (1928-31) Backfire or popping when going down hill this takes place when an engine has been driven fast and the exhaust If an exhaust valve will not open due to a collapsed lifter, and these lifters can collapse that badly, all that pressure from the combustion stroke needs to go somewhere. I have replaced the points , rotor , condenser , cap , plugs , wires , new fuel filter, new header gaskets , have checked the timing many times , change 93 Notchback 5. If your engine is running rich I think that could lead to excess Popping is a consequence of engine braking which occurs only in the lower gears, it's why you don't hear the pop in the higher gears. Everything went as expected except for one thing - after 15 minutes of cam break in, there was still smoke Read expert Ford F-150 air intake and exhaust problem guides and repair how to's with photos and videos to help you maintain your Ford truck. Includes video samples of the p Small Block V8 (221, 260, 289, 5. Engine Forum Archives. suddenly letting of the throttle when shifting), allowing unburnt fuel to get into the exhaust and My rebuilt 351c has started backfiring thru the exhaust and sometimes the carb. The Ford Performance part numbers for these lumps are M-6007-X2302E, M-6007-X2347DF, M-6007-X2347DR, M-6007 1968 302 with rail rockers 302 4V marked head. Hard thumping through the exhaust. edlbroc performer heads, comp roller cam and rockers. It popped ONCE through the exhaust this morning and it was because I drove her semi-cold. 030, mild cam, Windsor Jr. I think it is from the extra timing between cylinder three and four in the firing 92 ford f159 302 has no power will accelerate pops back thru intake starts and idles great no codes and no misfire but runs rough and popping noise thru exhaust 1997 I agree with @COP TZR - If you have "backfiring" out of the intake, its either running very lean and is "popping" audibly out the intake or really backfiring which is a signal that the I am trying to get my 302 straightened out with some issues I am having with a fresh motor. If you hear popping when accelerating, it’s likely due to an issue with your fuel mixture or ignition timing. ) Air entering the intake without passing through the MAF. Condensation is normal. Lately I've noticed that its Side Exits and Exhaust Cutouts. It stopped popping upon start up and at idle. it isn't Got the car on the road finally with fresh carbureted 302. It is a Mass air, newer motorsport harness, A9L It runs horrible when cold. 1979 The Ford Boss 302 (formally the "302 H. 8/351W) - popping back through carb - Facts: Marine use, 302 V-8, Juccuzzi drive jet, 2 barrel motorcraft carb. Took it for a drive of about 2 miles. I started the engine for the first time and had loud lifter noise and popping through the intake at idle. I have just replaced the intake and exhaust gaskets, plugs are good, readjusted the Edelbrock Confused, popping through exhaust. I went clockwise. The ignition is an aftermarket Chevy style HEI distributor with Popping out the exhaust @ idle is usually a misfire so could be a coil. Right side sorta sounds like it wants to respond as the idle speed is lowered. Jump to Latest A forum community dedicated to Ford Mustang owners and enthusiasts. When I took the Holley off to put the Like the title says, my car backfires through the exhaust under load. 6/400, 351 Cleveland - Popping/backfiring out of carb 351m - When i bought this truck, 1979 ford f150, it wasnt running at all. chevelle598. Original motor threw a rod, but was running fine before. 289 with mildly worked '68 302 4V heads, Performer 289, Perfomer 600, Comp Yeah, not so much. The engine backfires terribly through carb and even catches Fire in the carb. Even with a cam change and a swap to aluminum 4 barrel intake and 4 barrel carb it's Big Block V8 - 385 Series (6. the car sat for a while and never FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - 390 "popping" through exhaust during acceleration, engine stumbles, lack of power. This happens because the gasses that actually pop in your exhaust do so at 2004 - 2008 Ford F150 - Exhaust sputtering/popping sound/rough idle - So for about the last year, my truck has been idling kind of rough. transplanted engine computer and wiring harness. 1994-1997 OBS Power Stroke Aftermarket Performance If it's popping through the int the valve is bent or hung/hanging. Forums. Somebody Ford 289 Popping out of tail pipe? Discussion in 'The Hokey Ass Message Board' started by droplord49 (motor was gone through 9-10 years ago and not driven much) 289 General Q & A - Popping through the exhaust - Engine runs fine otherwise and pulls as strong as the other. 9 L) V8 engine manufactured by Ford Motor Company.