Need help diagnosing this problem By crittersxxx (Read 805 times)

[crittersxxx]

I have a gy6-qmj 150cc Chinese scooter. I've tried a couple of different batteries that seem to have good charges I cannot get the motor to turn over very quickly I didn't think it would be a starter issue because they usually just go out. I'm thinking the motor or starer clutch is in a bind or something. And the Starter clutch gear don't seem to be slipping. anyone have any ideas what it could be I can't get gas to pump up to carburetor because it's not turning over enough to get fuel up through the pump cuz it's not turning over fast enough.

[geh3333]

Remove the junk vacuum valve and put shutoff valve in its place. That will get you the fuel u need to the carb.

[toxictom]

I had the same issue and when I removed the starter I discovered it was full of oil. Pull your starter and then hit the start button and see if it spins freely.

[heathenistic01]

You may also want to check the timing. My 150 had the same problem but so bad it was blowing the fuel in the line back into the tank.

[heathenistic01]

I do have a question if anyone could possibly assist in this i would greatly appreciate it. That same 150 is now a 170 after a B/B kit and I saw a question on a different post here and he mentioned something about to much compression. Can to much cause problems and how do you alleviate that problem?m thanks

[atvgodad]

I bought a nice looking scooter that would not crank - even with a new battery.  The starter was in a bind.  I bought and installed a new starter.  It was in a bind.  I discovered that someone may have replaced the belt, and left the gasket out that goes around the belt housing.  I put a new gasket in - and bang - that was it.  Just that thin gasket made the difference. No more problem.  Among other causes, that is one.  Good luck.