Question about 2005 Suzuki Boulevard C90

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'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 replaced battery, stator and regulator already, still does it. I'm thinking it may be the starter, tired of throwing money at it.

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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 battery.

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

Posted on Feb 15, 2010

Testimonial: "I thought it might be something with the compression stroke as well, it appeared to labor. Finally replaced the starter, hasn't given me a problem sin"

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Is ur batt charged well-u sed they changed the electrics-could be faulty parts--hav the alternator n reg tested for output values--also chec the health of bikes wiring

Posted on Dec 28, 2009

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