ok ive done some searching but don't know exactly what the problems is. Randomly my car will idel at 2 k for a few seconds after i push the clutch in then it will return to normal. it also has a small back fire on deceleration all the time warm or cold . Also if i leave the car idel for a while sometimes it with throw a code ( Random cylinder misfire). The car also has what sounds like a loud exhaust leak on the drivers side which goes away after the car worms up. I think i have a few things going on here but has anyone's car ever done this?? I checked the plugs the seam tight. Sugestions ???

 

Check every singe plug wire for burns front top to bottom.

 

will do

anything else??

 

do you have a cat. convertor? When i took off my cat it backfired also.

 

yes i have the stock cats. and my car is an M6

 

anyone else ??