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Posted on Jan 02, 2017
This to me sounds like you need a carb cleaning. If you have let the bike sit for an extended time the carberators maybe clogged or gummed up. This has to do with the new gas that is out there now. It is cheap and with the introduction of Ethanol alcohol now it is even worse on being stable for long periods of time. I have seen fuel go bad in as little as 3 weeks.. One quick check you can do is open you fuel tank and smell the fuel. IF it smells like varnish it is probably bad. You can drain the tank and add new fuel and that should solve your problem. Keep in mind, that the carbs need to be drained as well to get the old fuel out of there also. Make sure you have a battery charger going when you start crankin that puppy, because you will need lots of extra juice to get that baby to fire up. If it is starting now and runs on choke, that means your idle jets are clogged. Best repair is to remove carbs and clean idle jet. Unless it is fuel injected.
Let me know how that goes and we can proceed from this point. I am a certified mechanic from MMI as well as a HDTV GURU. Smiles. have a good one.
Posted on Dec 07, 2008
could be. I had a 91 kx 250 that was acting crazy and it turned out to be the stator and cdi box. you can check the stator easly with a omes meter but the cdi box is nearly impossible to check. you pretty much have to buy a new one and try it. also check to see if your power valve is working.
Posted on Jan 22, 2009
Hi mate it seems your powervalve is turned up fully, It can give u power on top end ,middle,and bottom end of revs.With it being a 87 a manual valve you will have to take off your exghust off.Now take a look into your engine through your exghust manifold and turn the power valve round ,you will see the hole in which the burnt gases escapre gets bigger or smaller by adjusting this gap you will find the perfect riding style for you (agressave or plesant ) remember to tighten all nuts up ,as you dont want your valve spinning round cus it will shread your piston and rings to death. hope this works
Posted on Jan 23, 2009
I have seen this before a few things to do too make sure. First take the air filter out and shine a light use your fingers to move the slides up and down I suspect the springs that go on the slide is not seated in center you can tell from the slide going halfway and hanging up. Next, the boots on the slides only go on 1 way there is a notch on the carbs for them. I would guess this would fix you up if not we can get deeper into it with air-fuel mix screw settings.good luck
Posted on Mar 25, 2009
the stator wouldn't make it cut out.. do you know what rpm it's cutting out at. hey feel free to email me email@example.com and i'll walk you through it and try to help you out.i'm pretty familiar with things of the nature... might even be a smaller fuel jet restricting you or a re stricter in the exhaust pipe or muffler or between the carb and head. give a shout and i'll try to help
Posted on Apr 26, 2010
Testimonial: "i changed the jet, that was the first the i was told it could be and (even though i didn't think that was the problem)it worked the bike runs awesome "
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