Topica Loopframe_Guzzi Archive


Subject: RE: One Cylinder Firing

Author: Gary Cheek

Date: Sep 18, 2001, 12:38 PM

Post ID: 1708286494


Make sure the start plungers in the carb are seated AND sealing. They
are known to leak extra fuel and it usually plays out the way your
is.Start by checking freeplay in the cables and then remove the plungers
and check the seats for dirt etc. .
Barry Dikeman wrote:
 Hi All,
I have a 1973 Eldorado with about 30K on the clock that has recently
started
to annoy me! I hadn't run it for several weeks when I went to fire it
up
last weekend, and noticed the following problem:
It cranked over several times and came to life on both cylinders for
maybe
30 seconds before the left cylinder cut out completely. In it's cold
state,
the right cylinder alone would not sustain unless I kept the gas to it.
I
pulled the plug... wet with gas by now, dried it, gapped it and cranked
it
outside the cylinder... spark...not the strongest I have seen but true
blue.
I screwed the plug back in and cranked some more.. nothing! Pulled the
plug, again wet with gas... cranked it to check for spark... none.
Pulled
the coil wire @ the distrib. cranked it... spark! Replaced cap and
rotor... nothing. Looked up under frame at coil and noticed that PO had
slid the coil unit too far forward in its mount causing the coil wire to
be
bent/kinked in a hairpin turn back down to the distrib. Removed tank,
repositioned coil, replaced wire, tested for spark (Yes!) replaced tank,
cranked and fire in both holes! Problem solved ... or so I thought.

Several days (and 50 miles) later, I went out to the garage to begin
another
ride and... repeat first part of experience in sentences above! No fire
in
left hole! Again, tested for spark @ all points of distribution system
good
except for left side seemed flakey/intermittent. Replaced left plug
with
the crummy old Champion that it came with when I bought it and after a
few
lifeless cranks I saw a spark, screwed in the plug and it ran!

I don't really feel comfortable riding this bike anywhere but around
town
until I definitively solve this. Any insight out there?

Thanks,
Barry



Gary Cheek

1971 Ambassador (I think it's sold)
1972 Eldorado Police
1974 Eldorado 4LS/Amal carb civilian

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