valve went into the piston and smashed the piston and power valves rebuild it, compression should be 155-160 at least. backfires and hard starting is a common problem with compression as low as yours.
yz125 wont run i noticed oil on top of the piston what would cause this and would reed valves cause it not to run thanks zac it seems like the oil seals on they way out i am not 100/% sure.
...sometimes and when it does it runs for a few seconds then stalls out. any ideas? thnx chece the reed valves and jets make sure theres no **** in ya ...
...reed valve need to be replaced. I think your right, if the problem occured after installing the new pipe, you definetly nneed to re-jet the carb, try finding their site and they should have the info ...
changed reed valves drained out old gas put in new gas now it won't start. It's a 2004 Yamaha Blaster hi mate on the carb there are 2 screw one for mixture and one for idle you need to unscrew the ...
...you mean not to start they could. a reed valve is simply a one way valve that captures the air fuel mixture in a two stroke motor forcing to go into the combustion chamber rather than back out the ...
does yz80 have a ridvalve? reed valve, or reeds, yes.
reed valve but I guaranty a dodgy reed valve will make running and tuning the bike a nightmare. Your reeds need to seal perfectly and open and close about 2-3 times a second so if any cracks, holes or
...reed valve. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day. Dirt Rider Magazine 1999 yz250 not ...
When I start bike it rev flat out Checked carby & reed valves & they look ok Idle adjustment, throttle cable, vacuum leak, carburetor. THOROUGHLY CHECK them all
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