back firing

95 rs · Post by **95 rs** » June 18th, 2005, 11:39 pm

i ll be driving and when i let off the gas all i here is backfiring from my muffler and well what could cause this?? cuz its freaking annoying when ur in a parking lot and u low down and u hear a car back firing

and well could it be that i have no cat and it goes right to my muffler cause i have an APC muffler with like a 4.5 inch tip on it and well the thing is loud and im wondering if that might be the problem?? someone help me plz

Tunes67 · Post by **Tunes67** » June 19th, 2005, 12:18 am

Backfiring can be an indication of misadjusted initial timing.. however.. unless its way out of adjustment.. your ECU should be compensating for it. Another cause of backfiring could be a small hole in your exaust system.. this allows cold air to be sucked into your exaust system which can mix with unburned fuel and ignite if the mixture comes across a "Hot Spot" in your exaust system. Hope this helps.

Tunes67