Nearly at my wits end with this bike. Idle takes off like a rocket with the tank on.

[tkent02]

The petcock clacking away is not normal, it should be silent.

 

[cp___32]

With the gas cap off, I could definitely see the fuel sloshing around as the vacuum pulsed the petcock and could hear the noise reverb through the tank (which was 1/2 full at the time). I put a new rebuild kit in it a few years back and this is the first time I've had the tank on it with fuel in it. Maybe it wasn't the noise from the petcock itself but engine noise being amplified by the tank? It doesn't seem to be starving for fuel either.

I'll check the coils and grounds this weekend and see if I can get consistent spark and go from there.

 

[Guest]

Tightened up the throttle cable, and decided to check the plug order. Turns out that I had 2 and 3 swapped so when I changed them to the correct configuration it ran better.

2 and 3 fire together so it shouldn't matter if you have them swapped or not.

With the gas cap off, I could definitely see the fuel sloshing around as the vacuum pulsed the petcock and could hear the noise reverb through the tank (which was 1/2 full at the time).

Does the petcock make noise when set to the 'prime' position? Do you get the same revving problem?


Mark

 

[Connorjeanes]

Mine is doing the same thing although mine is on VM Carbs, and having the tank on or off makes no difference! Let me know if you have any luck!

so frustrating! If I drop the idle screw all the way out so I keep it running on the throttle she rides lovely loads of power. But obviously no idle will just stall on closed throttle.

good luck!