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82 Suzuki gs 650 gl starting problem

My gs 650 gl was tuned a few months ago and ran great. A power issue shortly after had me replace the Regulator/Rectifier which solved the problem. The bike ran great again close to another month. The bike began to start much harder than usual, which I attributed to colder weather. After warming up it would start instantly and run fine. Now the bike turns over a few times and then slows as if losing juice. For a while I would let it sit and try to turn it again when some life would come back to her. But now the engine sluggishly turns once or twice before doing nothing at all. I jump started the bike off of a car battery which did get it to run but after a good deal of turning over. My first reaction was to replace the battery but the lights are not dim which somebody suggested meant the battery was not at fault. My suspicion now is that either when we replaced the after market Rectifier/regulator the ground wire, which my mechanic put directly to the negative battery terminal, may be preventing charge, or possibly my starter is shot. This is my first bike and I am out of work so the real issue is I cannot afford to pay to have a mechanic hundreds of dollars. Thank you for any help.

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Sorry to tell you, but you may have to lay out a little more money for detailed instructions. Below is a website with repair manuals:
OR you might try looking at the electrical system, points, wires, plugs, distributor, rotor or whatever your cycle has in its electrical system.

Posted on Jan 09, 2013


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Posted on Jan 02, 2017

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SOURCE: 2000 Suzuki Marauder 805cc Slow Crank on startup!

Sounds like the oil is thick. Do you know what weight oil was installed last? If there was 40 weight put in and its getting colder out it get thicker. You can change the oil to a 30 weight and change the filter to see if that helps.

Posted on Oct 03, 2009

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SOURCE: '05 Suzuki Boulevard C90 sometimes won't turn

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

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"

  • 338 Answers

SOURCE: 1998 vtr1000 firestorm. Slow to turn over

check your battery cables for frayed wires bad connectors solder points at the terminals

Posted on May 12, 2010

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SOURCE: I have a 04 gsxr600 and now it won't start. Dumb

Sorry to say, your battery is dead. The reading you got was under no load conditions. Put a load of about 50 amps across it and the voltage will probably fall to just about nothing if even your lights are pulling it down to probably about 8 volts. Only one solution here - you have to replace the battery.

Posted on Mar 17, 2011

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