Subject: Re: An oddity

Juha,
I also pulled the accelorator pump out, cleaned it with carb cleaner and it
seems to be operating OK. Thanks, Bob
----- Original Message -----
From: Juha Vattulainen <juha.vat-@patentti.sci.fi>
To: <Loopfram-@topica.com>
Sent: Thursday, April 19, 2001 9:49 AM
Subject: Re: An oddity

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Hei Bob,

Propably you have already gone through the carbs, but what about switching
the left and right hand carbs temporarily in order to see if the problem

in the carburation ? I am not sure if this can be easily done. Instead you
might of course try to locate an extra carb to make the test.

I am not sure what kind of carbs you have in your Ambo, but if your carbs
have the piston type accelerator pump, you could check that the small ball
valve inside the pump piston is ok.

Best regards, Juha Vattulainen

Brian,

Thanks for your response; I sort of get it. Let me tell you a few more
things about this Ambo of mine.

When I bought this bike, over a year ago, it did not run right. The

dealer

installed a new battery and changed the generator which did nothing.
Electrics are all Marelli. All along I thought a piston kit was needed

as,

upon inspection, there was evidence of chrome flaking off the cylinders.
So, I installed a new Nikasil piston kit, new gaskets, lapped the valves

and

seats, measured the valve guides and valve stems within tolerances,

torqued

the heads two times for break-in period, adjusted the valves two times,
replaced spark plug wires and coil wire and checked for proper ohm
resistance, replaced return springs on automatic spark advance using 8

and 9

coil springs, replaced distributor cap, cleaned the cap, rotor and

points,

new points and condenser and I have put more new spark plugs on the
starboard side cylinder than I can count. Also cleaned battery terminals
and leads to regulator. (Even new header pipe gaskets.)

When I start the bike with a new plug she will run OK for about 10 mi.

Then

when I slow down or stop at a red light the starboard cylinder begin to

fail

and then will quit. I give it the gas a bit and she starts to fire again
and then fails. I pull the plug and always find evidence of fouling; the
plug is wet, dripping wet with gasoline. Sometimes gas will drip out the
starboard header where it joins the muffler. When both cylinders are

firing

the bike has plenty of power and (like the rest of you guys) the bike is

joy to ride but it is always short lived. Please keep in mind that

despite

all the changes mentioned above it is always the starboard cylinder that
quits.

I am very grateful for all the help from you guys on this list esp. Ian,
Andy, Peter, Rich and Mark and now from you Brian but I am now becoming
desperate, therefore:

IF ANYONE ON THIS LIST PROVIDES ME WITH INFORMATION LEADING TO THE ARREST
AND CONVICTION OF THE GREMLIN THAT IS CAUSING THIS PROBLEM AND RESULTS IN

AMBASSADOR RUNNING CONTINUOUSLY ON TWO CYLINDERS I WILL SEND THEM A CASE

THEIR FAVOURITE BEER - OFFER GOOD ONLY IN THE CONTINENTAL UNITED STATES -
ONE WINNER ONLY.

Thanks, Bob Hawkes

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Subject: Re: An oddity

Author: Robert Hawkes

Date: Apr 19, 2001, 8:30 AM

Post ID: 1706380491

Entire thread: