Topica Loopframe_Guzzi Archive


Subject: Re: Cam Noise/ carb synchronization

Author: Ian Adkins

Date: Dec 17, 2000, 12:13 PM

Post ID: 1704501705


Hi All,

 
The idle fuel/air mixture was set by warming up the motor , then with
choke closed, do one side at a time, turn in screw until
speed slows, then back out. speed will increase then suddenly decrease
as you back out. count the number of screw turns as you do this. go
back half way. this should be the mid range of fuel air mixture.

As stated in Guzziology be sure to wait about five seconds between turns of
the mixture screws to be sure the mixture has stabalized. I would recommend
turning the screws in quarter incrememnts narrowing the range down until you
have the highest idle speed.

Regards...Ian



 You may have to re set the idle speed screws after this to stay in the
1000-1200 range. Just move both the same amount up or down to keep the
synchronization.

This mechanical synchronization worked well for me, much improving the
idle
 and mid range smoothness. I have run it through all 4 gears and have had
smooth acceleration no knocking.
I admit I have not run the machine at all at highways speeds since the
tires
 were dry rotted when I did the synchronization.

Anyway, I cant say this is the best way, but would seem to be at least a
way get in the ball park if you are grossly out of synch.

Good luck



-----Original Message-----
From: Karl Kologiski [SMTP:jane-@gte.net]
Sent: Saturday, December 16, 2000 10:56 PM
To: 'PEHA-@aol.com'; 'Loopfram-@topica.com'
Subject: RE: Cam Noise

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My bike is a Ambo with timing gears, I was talking to a guy who had
a V700
and he said his bike started making a racket and it turned out to be
the
cam bushing. I am going to do some more investigating before I tear
into
the motor. Hopefully it is something minor.

I was playing with it tonight and noticed the throttle felt funny
and one
of the carbs seemed out of sink. It seemed like one of the cylinders
was
trying to play catch up with the other one. It is possible that
could be
the problem. If the throttle is 3/4 turned at 4-5000 rpm and the
slides
are way out it could starve one of the cylinders for fuel, putting a
load
on the other one. The noise going away when I accelerate the would
make
sense because when I accelerate the accelerator pumps would kick in
feeding
the starving cylinder. I know it sounds crazy but I have had a
similar
thing happen on my BSA lighting. One of the adjusters on the
throttle
cable backed off and the slide in one of the carbs would only open
1/2 way.
The ambo has the original 1 into 2 cable on it. I am going to
strip the
carbs and install a duel cable system with a T3 throttle just to see
what
happens. I will let everyone know how it turns out.

Jane & Karl Kologiski
Bird at the Wheel - Motorcycle Arts-
St. Petersburg, Florida

Visit our web site at
http://home1.gte.net/janemac/bird.html


-----Original Message-----
From: PEHA-@aol.com [SMTP:PEHA-@aol.com]
Sent: Saturday, December 16, 2000 5:52 PM
To: jane-@gte.net
Subject: Cam Noise

In a message dated 12/16/2000 2:47:20 PM Pacific Standard Time,
jane-@gte.net writes:

 Kind of like a loose
timing chain will make noise

Do you have Eldo or Ambo? all of the Ambo should be timing gears.
Early
Eldo were gears, but later Eldo were chain. Mine made a noise
somewhat as
you describe. It was an earlier Eldo with timing gears. I also
suspected
fore/aft movement in the cam.


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