Enforcer504
New Member
I have a 97 gtx 780 I got used not running. To start I have 140 compression on both cylinders. I have rebuilt the carbs with Mikuni parts and also replaced the 1.5 needle and seat. Set pop off to 35 on both carbs. And I have set the low speed screw 1 turn out from seated. This ski will not start on its own unless I pour gas into the carbs. Then it will run and rev up but if I let the idle drop below 3,000 it will just bog and die. I assume now it has to be a gas problem. To add I have set the rotary valve timing just to make sure. The only thing I have not done is by pass the fuel tank and runs fuel line directly to a jug of gas to eliminate a fuel line problem. What do you guys think.
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