07TwinScrewdGT
FUEL SLUT
I was driving my car the other night and pulled up to a drive thru with the a/c on and while im sitting their idling the motor starts running rough so i pull into a spot and turn the a/c off and it gets better but is still not right and i also notice a popping sound out of the exhaust but it sounds more like a "poonk" and was doing it 1 or 2 times in a row every few seconds but seemed to only be coming out of the LEFT exhaust tip... So i drove it home and the next day when i started it it seemed fine until it warmed up and then started doing it again but not as bad as the night before... The weird thing is when i took it out and drove it it wasnt missing or running rough at all during normal acceleration or under boost... I even tried putting it under load by putting it in 5th at 40mph and flooring it and it was smooth as can be... The only thing I noticed while driving was that when id accelerate up to 3 or 4k and let off the gas id hear the normal racking off of the exhaust (I have pypes Mid Muffler w/ stock manifolds & cats) but also noticed it was popping more than normal (It almost sounded like I had glass packs but not quite as bad) Now its also worthy to note I had gotten gas about 15 miles before it started doing this rough idling and popping but luckily i only put in $10... So I went to another gas station and put in some gas and its still doing the popping sound out of the left exhaust at idle but the idle does feel A LITTLE better but not much and sometimes when i come to a stop at a light I think it quit and it idles ok but if i sit and let it idle for awhile it will start again... I know I probably need to drive it more to run out some more gas (Ive only driven maybe 20 miles since i put in the new gas) the car has 43K on it and I just recently replaced my HT0s with a new set about 4K ago... I was thinking It was bad gas and maybe it fouled or partially fouled a plug but it hasnt thrown any CELs and I dont know if I should waste $100 on ANOTHER set of plugs or pullem and clean em or check to see if an ignition coils going bad .. Im going to wait a little longer and burn out the rest of the tank but I am kind of doubtful its the fuel because it doesnt stumble while accelerating and seems fine when not at idle except for the excess popping when decelerating or shifting...Anyone have a similar problem or know what else might cause this kind of issue?
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