Backfires are much more likely caused by too lean a mixture than too rich.
----- Original Message -----
From: "Dave Downing" <ded74@yahoo.com>
To: <dakota-truck-moderator@bent.twistedbits.net>
Sent: Saturday, July 05, 2003 10:37 PM
Subject: DML: Re: what causes intake backfires?
>
> > Does anyone know what condition would cause intake backfires? would it
be
> a
> > condition of retatrded or advanced timing? or could it be lean fuel?
> possibly a
> > vacuum leak? I am experiencing major hesitation off the line (engine
bogs
> > almost to a stall) and intake backfiring.
> >
> > Any suggestions welcomed
> >
> > John S
>
> I'm getting the same thing in my R/T ever since I installed the 55mm F&B,
> 4bbl M1 & 1.7 rockers. Also changed the cap/rotor and plugs at the same
> time. Anyone know how you check for a vaccuum leak? I was thinking that
> maybe it was cause I'm getting so much air and the pcm is trying to add
too
> much fuel. I was going to wait until I got the headers and dual exhaust
on,
> hoping that those would lean it out a bit and see if it got better.
>
> -Dave
> '02 FR RC R/T
>
>
>
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