Topica Loopframe_Guzzi Archive
 

Subject: Re: %$^&(*#(

Author: Paul P. Linn

Date: Apr 5, 2005, 5:01 AM

Post ID: 1718650623

Ted,

The marks on the pulley can be a pain to see. I clean the pulley real
good and then put some white paint in the little notches to make the
stand out better. Like Bob said, make sure you put the pulley back on in
the correct spot or you could have problems. How loose was the chain
when you put the new tensioner in? Best thing to do is start from
scratch and find TDC on the left cylinder and then check the mark on the
flywheel is lined up with it's mark on the tranny housing (10 o'clock
when viewed from rear) and then check to see where your timing gear
marks are. I know this means removing the tranny, but it will keep you
from pulling your hair out or slashing your wrists. Have you checked the
compression on both sides? Did you pull the heads to see if you have
excess carbon buildup? Enough freeplay in all your cables? Do you still
have the stock fuel crossover? Did you strip and clean the distributor
and replace the springs? Are you getting a strong blue spark on both sides?

Paul

Ted Ward wrote:

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The bike ran great, then one day just started to bog down and hasn't
run well since.
I did have the distributor out in the process of trying to fix this
problem put it back recently. The bike will start and run crappy, but
it runs the same way it ran before I took it out. (checked the sheared
pin problem Greg Bender mentioned)

I also put in a new timing chain tensioner after this problem began,
the old one was just gone. The timing marks were lined up when I put
it back together could that still be the problem? But again, it runs
the same now as it did before I put the tensioner in.

I guess I need to get guzziology to figure out how to set static
timing (don't see any visible marks on my pulley) but I've basically
been getting it to start then trying to rotate the distributor by hand
to get the best position.

Ted

----- Original Message -----
*From:* Custom Guzzi <mailto:paul-@comcast.net>

Ted,

If you had the distributor out you could have put it back in 180
degrees out. Bike will run crappy when and if it starts.

Paul

Greg Bender wrote:

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Hi Ted,

If you are feeling suction when you put your hand over the left exhaust
port on the head, then that seems very odd to me. Unless your valve
timing is way off, I wouldn't think that should ever happen.

I'll ramble through some thoughts...

Let me think this through with consideration with the four strokes:

1. Intake - Intake valve open/Exhaust valve closed
2. Compression - both valves closed
3. Power - both valves closed
4. Exhaust - Intake valve closed/Exhaust valve open

Of course, there is some slight overlap, but nothing that I can think of
that would cause that much suction. Perhaps someone else on the list can
provide more insight.

I think you mention that you static timed the ignition, set the points,
tried a new condensor, tried new plugs, made sure the points/condensor
wires weren't touching, all to no avail (please correct me if I'm
wrong).

You may want to re-checked the static ignition timing. John Schwartz
told me a story of a bike he just couldn't get to run right one time. He
would static time it and it would run good for a minute, but then the
performance would deteriorate. He'd check the timing again and it was
off. Drove him crazy. Finally, he pulled the distributor and found that
the spring pin that holds the gear to the bottom of the distributor had
sheared off. I doubt that this is your problem, but when you are at the
end of your rope, it might be worth a try.

This just seems like a timing related issue to me...hmmm...

Ted Ward wrote:


 I'm about to slit my wrists trying to figure out why my eldo won't run
well
and noticed something odd, when I put my hand over the left cylinder
header
and crank the bike (spark plugs disconnected), I feel more suction than
exhast, feels like its going to suck my hand into the pipe. Is that
normal?

I have completely and throughly cleaned the carbs, I get spark, wiring
appears to be in good shape I have the aircleaners off currently, gas is

flowing though if I blow into the fuel inlets on either carb, it does
take a
little effort.

I remember when the bike originally began running bad, I noticed my
generator had slipped in its cradle and was straining its wiring, but
the
wiring still looks fine, the gen. light goes out when sufficient revs
are
reached and I do have spark (not sure how strong).

Ted




Regards,

Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender

Florida MGNOC website
http://www.thisoldtractor.com/fl_mgnoc

Minnesota MGNOC website
http://www.thisoldtractor.com/mn_mgnoc

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