|
|
07-16-2014, 03:55 PM | #1 |
Join Date: Jul 2014
Posts: 2
|
No spark? 50cc chinese scooter
Hello everyone,
I have a 2008 Shanghai, 4 stroke 50cc scooter. I bought it new and its about 4000 miles on it now. It normally sits in the winter and sat all of last year. I changed the oil, cleaned the carb a few times, adjusted valves a few times. I just purchased a few new belts, new variator fan and new 5g rollers. To the point: I have no spark. I only have a test light, and i'm getting no light from hardly any wire except the battery, even while cranking. I am getting light while cranking from.. I think a Green and Yellow wire, I don't know where it goes(somewhere to the front of the bike). I tested with the test light The CDI=no light from any wire, even while cranking, Ignition Coil(the 2 wires on the top)=no light, even while cranking. The Stator=no light while cranking, but only once briefly and dim from the Black and Red wire and only when I kicked it(and not the electric starter) and it didn't light again when I tried to kick it a few more times. I checked my spark plug and its ok. Took apart and cleaned my carburetor and its flowing gas. I jumped my run/stop switch. Tightened up my kick stand kill switch(it was loose) and verified that its still pushing the little kill switch up and down. I'm stumped. Please Help Side note: Also the about a year or so after I got it the head light and the tail light went out. Only the side head head lights work(its a three light system, 1 main light and 2 side lights in the main head light glass) but not the main head light, the tail isn't lighting up either only the thin top strip when I hit the brakes, the whole thing used to light up. I heard this as something to do with the stator? Brief History: It sat for about a 9 months to a year, it ran so-so before I put it up(not going as fast anymore and slow take off)I adjusted the valves a bunch of times and it didn't really fix it like it did when I first adjusted them a year or two prior. During that time I had starting/no spark issues so I took it to a shop when valve adjustments wouldn't solve my problem anymore. I don't remember if it was my Ignition coil, CDI, Stator or whatever, all I remember is when I went to pick it up, it was running and the mechanic wasn't there for me to talk to so I just left. I recall my run/stop switch wasn't turning off my bike anymore but I thought nothing of it, I just used the key to turn the bike off and was going to go back to the shop later when I had the time(I never did). The bike ran but never really as fast as it did when I first bought it. I drove it home on the expressway when I first got it and it was flying to the max needle point (45-50) with no problems(on a side note how can I get it like this again? Is it possible?). |
07-17-2014, 11:20 AM | #2 | |
Join Date: Jul 2014
Posts: 11
|
Quote:
|
|
07-19-2014, 09:00 AM | #4 |
Join Date: Jul 2011
Location: Connecticut
Posts: 493
|
The green wire is ground (negative) on gy6 wire harnesses.
__________________
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. |
07-20-2014, 05:36 PM | #5 |
Join Date: Oct 2008
Location: Hyde Park, NY
Posts: 1,126
|
The note about your kill switch not working before bothers me. What you're describing is the symptoms of trying to start with the kill switch shut off. I would look there.
__________________
2008 Eagle Milano 150- 9,679 miles 2009 Honda Rebel 250- 10,434 miles 2009 CF Moto Fashion- 16,023 miles 2009 MC-114 50cc Cub Clone- 4,317 miles twowheeler.yolasite.com/ That's 30,049 China Scootin miles and Counting. |
08-01-2014, 06:14 PM | #6 |
Join Date: Feb 2014
Location: las vegas
Posts: 100
|
when you get your multimeter turn it on 20v ac, test the yellow and white wire from the stator, you should get 9-11v ac, start at the beginning with the stator and work your way up
__________________
2012 Jonway X 44mm Hoca crank 52mm Hoca big bore MMS big valve head raised ports, polished, milled .023 Hoca 26mm carb NCY titanium valve springs NOS wet nitrous system Holley fuel pump MMS variator Naraku CDI HT coil 4' Wheelie bar MMG stainless slip-on exhaust NGK "11" spark plug UNI filter 2014 Icebear Maddog too much to list http://mmsscooters.com |
|
|