cr125 issues.. I've replaced everything please help
Posted 15 March 2012 - 08:44 PM
2nd issue is. It's down on power. When I first got it it was fine but in trying to solve the hard starting issue I replace just about everything including top end, plug, crank seals, Now it runs fine just runs out of power. Pulls fine on the bottom hits the powerband then just kind of hits a wall where it won't pull anymore.
Please help I have dumped over 1k into this bike not including the cost of it and I want to try and get some of my money back. As it sits I don't think I'd get much over 500 for it.
Posted 15 March 2012 - 09:48 PM
second problem, have you checked for proper powervalve operation?
Posted 15 March 2012 - 10:03 PM
Edited by KcDavis, 15 March 2012 - 10:04 PM.
Posted 15 March 2012 - 10:23 PM
Posted 16 March 2012 - 12:05 AM
I suspect you need to replace the float inlet needle valve, and possibly its seat. Even upon inspection the tip of the valve might appear okay, but a slight imperfection in that mating surface will cause a leak ... especially since the amount of pressure to seat it is relatively light.
To lose power up top is due to a lean/rich issue, a fuel delivery issue, like the float bowl running out of fuel, or an ignition cut-out problem, or a powervalve issue. I would say since you are having flooding issues, that you will likely solve both issues by addressing your carb problem.
Posted 16 March 2012 - 01:15 PM
Posted 16 March 2012 - 02:15 PM
Posted 16 March 2012 - 04:12 PM
Posted 16 March 2012 - 04:31 PM
I was lucky enough to find an obvious mistake. In short the exhaust port needs to become larger as the rev's increase. I'm not super familiar with 91 pv assembly's, but somethings not assembled right. Do you have a service manual? If not i found a link you can download a freebie, or find a fiche that shows an exploded view and make sure it went in properly. It isn't opening. I am hoping someone on here will chime in who knows more specifics to that year. The guys in this forum are always helpful, be patient and you will get it going!