Cant keep Eton 90 running

[zack221]

I have just replaced the carb with a new one and I still cant get it to run. I cleaned the carb even though it was new. I have tried 3 different carbs. I replaced the coil and cleaned the fuel petcock. It will start and only run about 1/4 throttle and wants to start to die. If I kinda put my hand over the intake for a second I can get it to rev up completely but then it starts slowing down and dies. It wont idle. Im over this thing I have never saw anything like it. We have had it for probably 2 years and I have rode it once. I ended up using another carb off another 90 to get it to run. The new carb does the same as the other 2 that I have. I am starting to think a vacuum leak or something I have done a leak down test though.

[zack221]

Watch "Eton Txl 90 problems" on YouTube
Eton Txl 90 problems: http://youtu.be/Hk4tWw5nN5E

[chris p.]

did you drain the tank and put fresh fuel in? try eliminating the factory petcock.run a fuel line straight to the carb(with a filter).also,you have to run an air filter of some sort even when tuning.my sons preddy 90 liked one on.the air/fuel screw should be about 1.5 turns out too.also check the carb boot to the intake as they crack sometimes.when was the last time you installed a brand new plug?? one more thing.make sure no mice got in the exhaust and built a nest and clogged it.

[zack221]

Yes I replaced the fuel with fresh fuel. I havent bypassed the petcock I thought about that today even though I got it flowing good. Its got a brand new air box and filter on it. The plug is pretty much new. As far as the exhaust its clean. This thing is blowing my mind it has to be something simple im overlooking. Please anymore recommendations I will try any of them.

[LT80]

Got compression?

[thepowester]

i am in the same boat! I bought a Kasea 90 for my son, pretty much the same motor i believe, and its doing the same thing. I had a parts bike that came with it and neither carb will allow it to run. However mine will idle and if my hand is over the intake with no filter i can ride it around if I move my hand around, almost like choking it off. Does yours have the full wiring harness with all the accesories? Oil pump, electric start, electric choke? I think ours has the petcock removed cause it was overflowing the carb until I adjusted the float. Let me know what you find out and maybe we can share information to get our machines running.

[LT80]

Got compression?

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