> I just bought myself a ColourTune, and spent some time this weekend
> playing with it. It showed my idle to be too rich, and I set about
> leaning the idle mixture in search of the elusive "Bunsen blue". Un-
> fortunately, the idle got VERY lumpy before I got to blue. What should
> this be telling me?
That there is more than one adjustment involved, or perhaps you have one
cylinder that runs really rich...
I was using a ColourTune to set the idle mix on a 1500cc Datsun engine,
which is kinda-sorta-a-little-british-in-terms-of-heritage... and the
same general thing happened - the thing is, I had to iterate between the
throttle stop and the idle mix about 5 times to get the right mix.
Just turning the idle mix screw was NOT enough... each time I got close to
the right mix, the idle speed would fall out of spec, so I had to goose
the idle up a bit, then go back to the mixture screw. That car has run
GREAT ever since...
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John R. Lupien
lupienj@wal.hp.com
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