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Old 08-06-2009, 11:37 AM   #1
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this past weekend at our club race my motor cut off in the main and i could never get it started again. i can start it now but ONLY if i hit the trigger and givew it throttle, as soon as i let go and it idles, it cuts off. any ideas of what might be wrong? the compression is pretty bad also but wasnt bad at all before the race i went to. the motor only has 3 gallons through it and hasnt run over 240 EVER!
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Old 08-06-2009, 11:53 AM   #2
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Have you changed out the glow plug. I would check that first.
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Old 08-06-2009, 12:17 PM   #3
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try sealing the engine too
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Old 08-06-2009, 12:48 PM   #4
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Did it hit it's breakin point and just need to be re-tuned?
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Old 08-06-2009, 01:22 PM   #5
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Did it hit it's breakin point and just need to be re-tuned?
+1 retune......
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Old 08-06-2009, 01:25 PM   #6
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change the plug and retune
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Old 08-06-2009, 01:36 PM   #7
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Think you should sell it. I'll take it off your hands for cheap
Seriously sounds like a tuning issue though..if you said it dies when it gets hot I would think otherwise. Usually that's a compression issue. Idle up and see where you get. Also you might have to fumble with the low end.
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Old 08-06-2009, 02:25 PM   #8
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this past weekend at our club race my motor cut off in the main and i could never get it started again. i can start it now but ONLY if i hit the trigger and givew it throttle, as soon as i let go and it idles, it cuts off. any ideas of what might be wrong? the compression is pretty bad also but wasnt bad at all before the race i went to. the motor only has 3 gallons through it and hasnt run over 240 EVER!
check plug, replace if bad , turn your idle up to get it running and retune the engine .
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Old 08-06-2009, 02:36 PM   #9
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check plug, replace if bad , turn your idle up to get it running and retune the engine .
If anyone would know it would be Monty the Great Motor Man
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Old 08-06-2009, 04:47 PM   #10
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its leaking oil and gas out of the bottom of the head and going up the button and leaking out..would that be a busted shim?? or a button issue?
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Old 08-06-2009, 05:25 PM   #11
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BUMP, any help?????? would be greatly aprecieted!
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Old 08-06-2009, 05:33 PM   #12
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If it still has some commpresstion? tear it down,clean it up, seal it up, re-set it to break-in settings and go. Take a close look at the o-rings on the needles, and fresh fuel lines, new glo-plug, and you should be all set. Or just break out 2-3 hundred and buy a new one. Me, I always go cheep first,then blow the flow. Or you could send it to one of the motor guys on here and let them do it.
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Old 08-07-2009, 02:11 AM   #13
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take the motor apart.. its ez

and just go over everything
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Old 08-07-2009, 06:40 AM   #14
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its leaking oil and gas out of the bottom of the head and going up the button and leaking out..would that be a busted shim?? or a button issue?
Have you checked to make sure they are tight? Screws do find away to come loose.
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Old 08-07-2009, 08:26 AM   #15
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its leaking oil and gas out of the bottom of the head and going up the button and leaking out..would that be a busted shim?? or a button issue?
loose head or plug most likely
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