Hmmm. But how/why would that bit of "weeped" fuel get into
a cylinder a) before the regular intake of fuel when the intake valve
opens, and 2) at such a time that the explosion occurred when the
exhaust valve was open (after ??) normal ignition, so that the
POP! would echo thru the open exhaust valve and out the tail.
Are we sure this isn't a valve problem about to strike??
BTW - after an (expensive!) valve job, intended to get new
valve guides installed, the car once again emits a puff of smoke
at startup sometimes (ever while running). Is there a tie in?
yikes!
chuckc
Frank Clarici wrote:
> chuck wrote:
>
> > I get one mildly load POP! apparently from the tailpipe. Starts fine
> > and runs great.
> >
> > Whassup?
>
> My best guess would be excess fuel leaking into the intake once you stop
> the engine. On start up, that extra fuel in the engine sort of explodes.
> Webers are good at this, SUs rarely but not out of the question.
> Too high a float level will cause fuel to weep into the carbs.
> Or parking on hill can do it too.
> If SUs, raise the needle just a bit and see if fuel is leaking past the
> needle.
> If someone knows how to cure a DCOE of this, please let me know.
> --
>
> Frank Clarici
> Toms River, NJ
> Lots of Sprites
> http://www.exit109.com/~spritenut
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