ratdog
Scoot Enthusiast
Posts: 342
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Post by ratdog on Oct 15, 2018 19:28:40 GMT -5
I believe the opening statement was “ I was driving down the road and lost power”. Valves don’t suddenly go out of adjustment, and if they did toeffect the power that much power, they would be god afual loud. If they were to tight they could loose power when they got hot, but the engine would return to normal when it cooled
Maybe no one reads my posts
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Post by mtrammel9122 on Oct 16, 2018 11:12:22 GMT -5
I have used the kick start before. It doesn't feel any different when I put pressure on it. But it doesn't spring back up like it should. Resistance of some kind. I haven't done much more than clean the hell of of the carb and jets and changed the spark plugs. I do regular oil changes, my last one was about 2 weeks ago, and I didn't see anything. I make it a habit to check because I've had it happen to a different scooter. I looked at the plug I removed and it was brown, maybe a little dark, but no debris. It's a gy6, air cooled 49cc. I did try starter fluid in the carb(someone suggested that to see if it would start at all) and it didn't change anything. Also, to the guy in CT, thanks man, but I'm in North West Arkansas. I have a shop I can take it to, but I'd like to try to fix it myself or have some one help me hands on if I can. I'm just a little scared to do anything "major" and make it worse or screw it up bad enough that i should just get a new one. Thanks everyone for all the responses. Hopefully I can get it going with yalls help.
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Post by GrumpyUnk on Oct 16, 2018 12:04:12 GMT -5
I would remove the spark plug and take a look at its condition. If it is clean as a whistle, like new, no color at all, I'd be thinking it was too lean, and possibly overheated. I would then use a 12mm socket and a breaker bar or ratchet to rotate the crankshaft. You should be able to rotate it readily with no 'hard' spots except valve spring pressure to overcome when the cam wants to open the valves. Rotate at least two turns, noting if there is excessive resistance at any spot. If it rotates smoothy, put the spark plug back in, and repeat the rotation. You should feel resistance as the piston comes up on the compression stroke. If not, there's a problem. If you do feel resistance from compression that is a good thing. You may have run out of fuel, or had a vacuum petcock fail, starving the engine. Check for fuel in the carburetor float bowl. There is a drain on most you can open to allow the float bowl to empty. You will need a Loooonnnnggg flat blade screwdriver to open the valve. Be sure to close it when you are done checking. tom
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