'05 Suzuki Boulevard C90 sometimes won't turn over, usually when stopping during bike runs (still warm). Starts then runs fine if jump statred by another battery w. jumper cables. Local cycle shop has...
I've got a 2006 and just found this while surfing around...
Realistically, diagnosing the problem behind a bike
that won't start, can be a frustrating experience, as
there are many potential problems that can create the
same symptoms. Here are a couple of guidelines to help
determine the root of a "labored" starting
problem, and by "labored", we mean that the
starter motor kicks in and attemps to turn the engine
over, but either can't get it over the "hump",
or does so with a lot more effort than usual.
If your battery is over two years old, and you CONSISTENTLY
have a labored start, then the first suspect will be the
If she starts cold with no problems, but CONSISTENTLY
has labored starting while hot, then the charging system
should be checked. A grounding rectifier can actually
discharge your battery while you ride. The battery can
somewhat recover while sitting, so it may well start the
bike while its cold, but then not be able to start it
after only a few miles of riding.
If everything on the bike seems to be in perfect order,
and you OCCASIONALLY have a labored
start, or no-start, for no apparent reason, and with no
perceived pattern, then very likely, the rear decomp cam
is loose. A good test for this is to place the bike in
second or third gear when it won't crank, and push it
backwards a few inches while in gear, then try again. If
it starts then, you definately have a loose rear cam.
Pushing the bike backwards while in gear moves the rear
piston back off its compression stroke enough to give the
system a running start at it when you push the button.
This will only happen when the rear cylinder stops on its
compression stroke. Therefore, it seems impossible to
predict when it won't start. Might be cold, might be hot,
might only happen once today, but maybe three times
tomorrow...This occasional no-start is
the prime indicator that the problem lies with the rear
decomp cam. (If the front cam were out of adjustment, it
would NEVER start properly, as both cams would then be
off their specs.)
---Quoted from http://www.moccsplace.com/images/decomp/decomp.htm
Dec 28, 2009 |
2005 Suzuki Boulevard C90