mikertldg

I got a problem ,my car was not running up to par so i changed the fuel filter and it straightened out but now it backfires when reved high(like 4 to 5k )could that be if a head gasket was shot?[8D]

Twisted

I don't think so, but you could rule out a blown HG with a compression gauge. Maybe you have a vacuum leak somewhere, causing a lean condition and backfiring. Or maybe it's still not getting a good fuel supply for some reason. Did you change both fuel filters?

Allan_York

umm isent backfireing caused by to much fuel? its not all being burnt so its expelled though the exhuast

Twisted

Well, this is what I know, then you can tell me if it's correct. With carbed motors (bikes in particular), if a motor is backfiring on decel, it is always a lean condition. If it were rich enough that it was backfiring, there would be other symptoms--namely a cloud of black smoke, and no MPG. Now, I don't know whether this applies to fuel injected motors. Maybe the computer can compensate for a lean condition, so that backfiring is actually due to a rich condition. School me on this, because I've been wondering.

mikertldg

i was talking to my dad and he mentioned a hairline crack in my distributer cap,could it be that easy,i will get one cause i need a new one anyway so i will let u all know.