gerry@probe.att.com scribed:
Subject: Backfiring
> ROGER writes ::::
>
> > Standard mixture rule: (Murphy aside)
> > Backfiring on acceleration is usually due to running lean. (carb spits)
> > Backfiring on decelleration is usually due to running rich. (boom in
> > exhaust becomes more apparent with low restriction mufflers.)
>
> Are you sure ? I always thought the same, however
> So now I am all confused !!! -
That's why I gave proper credit to Murphy! But- this should be true
for the most common examples. I've seen plenty of cars with leaks
in the intake manifold make all sorts of noise when you step on it-
real lean. And, I know what good vacuum, off-throttle sounds like
going down hill.
I think I'll defer any Webber specifics to mjb tho...
________
/___ _ \ Roger Garnett (Roger_Garnett@cornell.edu)
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