2000 Yamaha 800 xl GRRRRRR!

Found the problem. The diaphragm in the fuel pump was garbage! New rebuild kits on the way. The fuel sending unit was also bad new one them also coming. thanx for the help.

800xl 2000

All new carb parts and cleaned. Runs awesome on trailer with hose hooked up and when backed in water on trailer. but as soon as it gets off the trailer it falls flat on its face and wont go past 3000rpm. Put it back on trailer give it a minute and it fires up and would launch itself off the trailer if I would let. Very aggravating.

Ok but is there a possibility that the bottom end has fuel in it? Had this happen on snowmobile once and drained it out and problem solved. But my sled had a drain plug does this?

The only reason I think this is a possibility is because the plugs are wet and oily. But I can redo if you think thats it.

Ok I will. Just sucks tearing this thing apart :laugh:. Thank you again for the help!

Well found the problem and it was very stupid on my part. I triple checked the carbs before reinstalling them after the rebuild and I didnt think that was the problem and come to find out it wasnt as I started to rip this thing apart I found down in between the tuner pipe and the motor the gas line to the second carb was pinched between the pipe mount and the motor re bolted everthing went to the water and this thing rips!!! Also explains why the back plug was black all it was gettin was oil no gas. DUH! Well thanks again for the help and hopefully I can get the best out of the rest of the summer! Also explains the heavy smoke thought i was fogging the river for bugs!

Is 50mph about right for this? Its stock no aftermarket parts.

Yea I hit 53 last night conditions were perfect! I get my kawi 900zxi back today cant wait I have never checked the top speed on this seems like this yamaha is slower but have to find out after i get it.