Oh yeah. At idle, (1k rpm) the engine is stumbling a little. Not stalling,
just running a little rough. And when you goose it quick, there's a slight
hesitation and a cough (though the carb, that's when I scared myself). The
plugs are clean (no oil, and no black sooty stuff, in fact, they were a
little white the last few times I pulled them). ANd my compression is OK.
All within 5 except one within 10 psi (approx. 125 to 135).
Could a valve be burnt? And maybe I'm still testing for intake manifold
leaks incorrectly. What is a tried and true procedure that some of you
folks have tried?
Michael
<mgrazian wrote>
Hey folks.
I checked and readjusted the valves this weekend. A few questions arose. I
think the valve gaps were in OK shape. They were supposed to be set at
0.010 inches. I found some that were as far open as 0.013. Does that make
a significant difference? Is it OK to reuse the gasket as it was in good
shape, and I used some permatex black gasket glue to help with the seal. I
have a new one that I bought for the job, but misplaced it.
Also, the intake was still backfiring. I rechecked for leaks on the intake
manifold. Nothing found (doesn't mean nothing there). I enrichened the
mixture a little. Now the exhaust smells a little like gas, and it still
backfires throught the carb. Nearly scared the S#$% out of me when I had my
hand outside the carb barrel and it backfired.
I've got the timing at 10BTDC, from Bentley's and Haynes. Should I advance
it more or less as the next test (or should I test something else first).
And if I advance it, is that more towards 12BTDC or 8BTDC.
I'm determined to solve this damm thing. Even if I have to take a shotgun
to the engine. At least it won't backfire anymore. ;-)
Mike
BTW: I changed the accelerator cable with one from a bicycle brake. I
can't believe what a difference it makes. ANd for only $3.
|