Subject: RE: Eldo noise.
Author: sund-@olywa.net
Date: Jul 7, 2001, 12:54 PM
Post ID: 1707403178
I had been living in the mountains when leaded premium went off the market
in Canada. The 700 kept on running fine with a couple less degrees of static
timing. Then I rode it down to sea level one summer and the detonation was
gawdawful because the higher air density caused the mixture to be a tad
leaner than it had been at 3000 feet. Rather than re-tune the engine for lower
altitude, I found enough aviation gas to get me back into the hills. Anyway,
it made nasty noises just like you describe. I couldn't put any load on the
engine until the aviation gas went in.
It could be you have a not-so-great batch of fuel. But, if the engine is real
sensitive to fuel quality then look for some reason that it could be running
lean or running with too much spark advance. Lean-ness could come from
a previous owner re-jetting the carbs to live in, say, Colorado. Too much
advance could come from the static setting being wrong, or weak mechanical
advance springs in the distributor would let it get too far advanced for the RPM
of the engine. And, of course the points hafta be gapped right for the timing
to be what you think you set it at.
BobG
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