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10-13-2013, 08:22 PM | #1 |
Join Date: Oct 2013
Posts: 8
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50 cc not starting
ok gang I hope some one can give me some insight as to what I am missing here. Got a 2009 jonway 50cc scooter with 19,000 miles on it. Riding home the other night the bike stalled out at a couple lights idling and poor take off then died and didn't start back up. I have done the following. Drained the gas tank thinking I had some bad gas replaced the fuel filter and put new gas in tank. pulled the carb and thourghly cleaned and put back on bike got spark, check timing and valves both right on the money got good compression good vacume fuel is going into carb no hoses off every thing looks right but this little bugger will crank like normal but will not fire. Changed the main jet about a month ago to a #88 and a round filter I got from scrappy dogs and was strating great and running fine till the other night.
Any suggestions on something I might have missed |
10-14-2013, 02:35 AM | #2 |
Join Date: Oct 2013
Location: missouri
Posts: 8
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I know you said you have spark. But is that to the plug or out of it? Could have a fowled spark plug. I know this sounds simple. Seems like you know what your doing. But after seeing your list of things. There is not much left!
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10-15-2013, 01:33 AM | #4 |
Join Date: Oct 2013
Location: missouri
Posts: 8
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Alright. Keep me updated.
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10-21-2013, 08:16 AM | #5 |
Join Date: Jul 2011
Location: Connecticut
Posts: 493
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Did you do an actual compression test with a compression gauge? It is impossible to determine if you have proper compression without one. It sounds to me like you have a sticking valve or worn rings.
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2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats. |
10-26-2013, 05:46 PM | #6 |
Join Date: Sep 2013
Posts: 6
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As you've got spark - Did you remove the Pilot Jet and clear the passage it was removed from aswell? I've had to clean both Pilot Jet & Passage 5x once, before my scoot would start up.
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10-28-2013, 03:55 PM | #7 |
Join Date: Oct 2013
Posts: 8
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well gang back online found the problem was much deeper in the engine. Got it to start went klunk and stopped. rod seized to crank. got the new crank kit and 80cc kit from scrappy dogs and rebuilt from ground up and it starts and runs giving a little break in time before I really try to push it
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10-28-2013, 05:35 PM | #8 | |
Join Date: Mar 2013
Location: Vancouver, BC
Posts: 198
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Quote:
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10-29-2013, 01:58 PM | #9 |
Join Date: Oct 2013
Posts: 8
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no had plenty of oil the oil pump was not working and the bike got 19,000 miles on it
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