Vic,
No ... actually I wouldn't expect to hardly ever see a problem with
the enrichment valves failing to close ... usually that happens
because the diaphragms on the valves get torn and that is rare unless
someone has been disturbing them or they get dry rotted.
The usual problem with these valves is that they stick "closed" and
don't open back up until they get good and ready which results in a
bout of one cylinder running extremely rich for a little while ...
blowing a little smoke .. and then popping back open and causing the
symptom to disappear, (this can be fixed by simply taking them out and
cleaning them or shooting some carb cleaner in the PAJ2 hole behind
the slide rubber).
At any rate .. IMHO ... the "explosion" on deaccel is caused by the
pilot mixture being too lean ..... If the problem is in the carb or
somewhere in front of the engine, (spigot rubber etc), it may show on
the plug for the affected cylinder, (1/2 white etc) ... Otherwise you
need to take a really good look for an exhaust leak ......... or ..
more likely .........
The carb sync is a very good possibility ... if it was an "inept" sync
and you have a cylinder still pretty open with the others closed,
(throttle plate), it could create these symptoms. If you have never
"touched" anything then most likely .... you may simply be going
slightly lean on the pilot mixture and this is just the first sign
........ You may benefit equally as well as "Simon" and his "light
throttle" cruising stumble by simply cleaning the pilot circuits with
air .. carb cleaner or both ..........
campbell
----- Original Message -----
From: "MrPiBB" <[EMAIL PROTECTED]>
Subject: Re: pop goes the V max
> TC wrote:
>
> > Vic,
> > The "coasting enrichment valve" should slam shut on
> > each carbureator
>
> Would you expect this kind of fault with a one year old max?
>
> >
> > . Or .... these could be working fine and the mixture in
> > the exhaust is being leaned out due to a leak in the pipe.
>
> Induction or exhaust?, the pipes and or air box have never
> been touched.
> Oh also the bike was synced and adjusted in Feb., It was
> kinda cold, could this be a factor?
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