Backfire

[NEWCHAPTER]

I believe i have a crack in the drivers header , upon start sometimes it wont start and kind of backfires, sounds like from the drivers side header???

 

[onebadv6]

timing off maby
spark plug wires crossed

just some simple thought

 

[WarpSpeed]

how long does your car hold fuel pressure? Could be an injector seeping fuel after shutoff. Upon startup this can cause a backfire.

could be a bad wire

 

[NEWCHAPTER]

plug wires have not been messed with and according to the fuel press gauge it holds pretty good. I have a jim testa chip so not sure if thats something.