Yamama Surging

[Paul_Dublin]

95 Yam 60.<br />When I take throttle to about 90% all seems fine, but when I open it to Fully open, it seems to get a few more revs but then surges (like it's misfiring). <br />When I drop the throttle back a small bit it stops happening.<br /><br />I've just stripped and cleaned the carbs. Just added a new fuel pump and added a new fuel filter (External water seperator) and it was fresh fuel.

 

[Tacklebuster]

Re: Yamama Surging

I bet you have a kink in your fuel line somewhere. I have a 150 that did the same thing. It would only surge when I was running 5600 plus rpms. We finally had to put in a clear fuel line from the tank to the motor and found the bubbles. Turns out the blockage was in the rubber boot where the fuel line runs into the cowling.

 

[bigbrownbuku]

Re: Yamama Surging

is it the model with the arm out the side of the cdi?

 

[Paul_Dublin]

Re: Yamama Surging

The arm out of the CDI.. It has a small arm with the linkage to the throttle. I think this is to advance (or retard) the ignition?<br /><br />What should I check for?