Topica Loopframe_Guzzi Archive


Subject: RE: Eldo Carb Problem

Author: Fred Sahms

Date: Jun 13, 2002, 10:42 AM

Post ID: 1710426350


Sounds like you might have a clogged pilot jet and/or circuit. Are the
plugs black or light?


Jack Lundberg wrote:
 This list has been very helpful in identifying solutions when I get a
problem, so here's the latest request.

The Eldo has DelOrto carbs, new cylinders, and runs like a champ.
However,
it was off the road for a few weeks recently while I rebuilt the forks.
When
I put it back on the road, I was unable to properly adjust the carbs. I
use
a TwinMax to synch them so they are dead on as the slides open.
However, the
idle is a problem. Here are the symptoms:

1. Adjusting the throttle stop screws seems to go from no effect to a
rapid
increase in idle speed - sort of like a light switch.

2. Riding shows less retarding effect when closing the throttle - just
my gut
(or butt) feeling.

3. Also on deceleration, there is a fair bit of banging and popping
going on
in the exhaust.

4. I am able to keep the engine running at idle only by careful use of
the
throttle. Again, if I use the throttle stop screws to increase idle
speed,
it goes to 2K rpm instantly.

What does this indicate? Timing is per spec and there seem to be no
intake
leaks. I have a balance hose connecting the two intake manifolds.
There is
slack in choke and throttle slide cables.

I just lubed the throttle cables and replaced the one from the throttle
to
the splitter as it had a minor fraying condition. The slides return
smartly
to the closed positions when the throttle is released with the engine
off.

I'm thinking there is extra fuel getting into the carb, possible thru
the
choke circuit. If that is so, fuel mileage should be poor, but I hardly
ever
check it.

Waddya think? Methinks I am overlooking the obvious.

TIA!

Jack Lundberg
Colorado Springs, CO
'72 Ambassador, '73 Eldo, '86 LeMans 1000,



73 Eldo in crates
78 T3/949

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