Topica Loopframe_Guzzi Archive


Subject: Re: hello all

Author: Greg Barratt

Date: Oct 16, 2004, 3:49 PM

Post ID: 1717711564



if it ain't carbs/points/condenser/air leak causing the backfire, check
the timing..

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Hi everyone,

My name is Steve Farris, I live in SW New Mexico, and have been
lusting after a Moto Guzzi for 40 years. Recently I broke down and
got two old loopframes, a "71 Ambassador and a "72 El Dorado. While
both start, and drive neither runs well enough to want to take it much
further than the nearest gas station. I'm hoping to use the parts
from both to get one running well enough to have something to play
around on while I tear the other down for restoration. I found Greg
Bender's website via Guzzi Tech and he has been kind enough to give me
some advice about my Eldo's clunking rear drive line which I am
currently investigating. Here are a couple of other questions for the
group, please excuse the fact that I am new to guzzi's and haven't got
a clue.

1) the ambassador starts ok and has decent power but backfire's
constantly. I cleaned and reset the points, and reset the valves. It
runs better but still backfires (not as bad). My friend who has a '72
eldorado says he thinks it is pulling air in around the exhaust nut
on L cylinder (it has stock nuts which are in pretty bad shape). I am
planning on replacing with the newer two piece nuts, and also heard
that the condenser could be the problem so will replace that as well
(do I need guzzi condenser or will something from NAPA suffice?). Any
other suggestions as to the cause of the backfiring?

2) I had the rear wheel off the eldo checking brakes and
wheelbearings for source of noise coming from rear end. Bike sat
about 3 days after I pulled wheel cause I have been too busy to mess
with it til today. I went out this morning and started it up to put
it in gear and see if the noise was coming from the u-joint. When I
started it, it began blowing liquid out the crank breather tube. I
opened the oil filler plug and the crank is full of gas/oil mix all
the way to top of filler plug! I'm assuming this was somehow caused
by me leaving the fuel petcock on for several hours the day I took the
wheel off? Any ideas, suggestions, should I shoot myself now or
continue the torture for some time further before dying of a broken
heart?

Thanks

Steve

PS the PO has the fuel crossover hooked up without any in-line filters
could this in any way exacerbate my problem?

sf

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