backfire

My 1993 fox sometimes it hesitates and you can hear like a pop sound on the back when you floor it. The car is completely stock like 2 weeks ago bought a 255 fuel pump Codes: 81,82,84

Hey, I'm looking for some tips after rebuilding my holley double pumper. When I stomp on the pedal (idling) the car will sputter and if I press moderately it will spit fire out the primary and air out the secondary. If I press the gas gradually, there's no issues and it revs as expected. It...

Hello, I have been having persistent problems since before I replaced the lower intake(about 2 months ago) when flooring it in my turbo fox. The first drive out after replacing the intake I discovered my fuel pump was just hanging in the fuel tank, so I fixed that, and the car ran like a bat out...

Hey Guys! I am new to the group here at Stangnet, I have visited a few times and you all have been more then helpful every time. So the problem is I pulled my engine this winter and re-did my strut towers and frame rails and did a whole bunch of frame and body work. I put the engine back in...

Hi, recently bought a 2004 v6 stang and have been having some trouble. When I first bought the car it was running great, no problems as far as I could tell and I was happy. Then I ran out of gas. After I refilled it the car was running terribly. Rough idle and felt like the car was really...

Hey everyone, I've been having some very concerning issues with my 1988 5.0. For starters, the car has completely stock engine internals. Here's a short 30 second clip of the issue I'm having: View: https://www.youtube.com/watch?v=INJaNCEc_aE The issue is almost always in a high gear running...

I have an 03 roush 4.6L NA car, only mods done to it are CAI, Accufab 70mm TB and intake plenum, and exhaust. It threw a code last week for cam position sensor because it would backfire on start ups so I replaced that. I got a new ac system installed today, Just picked it up from the shop and on...

Ok, so this is kind of a long story so let me first start off with the model. It's an 89 Mustang GT (5.0). About a week ago I heard a knocking sound coming from the engine bay, so I took a look and thought the sound was coming from the alternator pulley. I took the alternator to O'reiley's and...

Hello all. My dad recently picked up a 1964 Mercury Comet, with 5.0 HO and AOD out of an 89-91 Mustang GT swapped in place of the original 289 and C4. We are having some issues with lean backfiring on slight accelerator application on occasion which I am trying to work through. When the car...

Hello all, I've read through this website for a long time now but have never posted anything. I recently did a motor swap on my 88 Mustang because it was not running right by any means. The new motor was free from a family friend and was taken from a crate. After installation and a few thousand...

Alright guys coming back to my roots here at Stanget hoping to solve this one. Recently swapped a PI 2v 4.6 with a Stroker kit into my 96 gt. Along the way I deleted my EGR because with Longtubes it's darn near impossible to put all that crap back on. Problem is I've had a little bit of a miss...

Fellas, I've been chasing a No Spark/Surging Idle/Stall, Buck, Backfire problem for quite some time now. I have worked though most of the tech notes I've found on the online, studied the systems using the Helm manuals, as well as the diagrams by jrichker, tmoss & joel5.0, and Tom Cloud's...