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ROCK AUTO
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G'day, I have a couple of ideas what may help. First I would think it was starving for fuel.Or maybe an unusual ignition system fault- So how do we find out? Well-you could try checking the bike for spark immediately after the bike stops. Remove the spark plug-Re-fit to the cap-place plug resting on metal where you can see it(DO NOT HOLD PLUG-HIGH VOLTAGE)-kick over & check for spark.If theres no spark-try a new plug but if the problem persists then the bike has a faulty ignition(coil,cap,plug,stator.ignition/kill switch,wireing) I think it is more likely starving for fuel. A faulty fuel tank filler cap vent or carby vent tube pinched or blocked. To check the filler cap-ride the bike & when the problem just starts-quickly crack open the fuel tank filler cap to let air in/out. If bike runs ok then the cap is blocked. To check the carby vents -just look at them & make sure none are blocked or pinched.They usually come from each side of the carby & one from the bottom(usually clear or semi-clear hoses). I hope that this helps you with your problem. Regards Andrew Porrelli
• The first thing to do with ANY engine that has sat for any longer
than a couple of months is to dump ALL the fuel in the tank and
carb(s). ALL OF IT !! You'll want to refill with some high priced fuel
that has fuel system cleaners (Like Chevron with Techron) not becasue
you need high-test fuel, but because you need the cleaners. It's ether
that or disassemble the carbs and clean out jets you can't find much
less see. Your choice. The carb kits alone will cost you about $50 so a
tank of high-test is looking pretty good, huh?
• Now the fact that you tried to crank the engine with old fuel has
fouled the sparkplugs. Go buy a new sparkplug.
• If your bike has a vacuum fuel valve, then you'll also need to set the valve to "Prime".
Welcom to fixit.com your 2004 Yumbo Dakar 200 Motorcycle has sparks comming from ehaust.... it could be metal from your engine,I know it sounds dumb but did you check the oil,make sure they put it back in, or it could just be you spark arrester starting to fall apart. Hope this helps !
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