I have a 62t/61x with an ADA head with 35cc domes and a factory dry pipe. I have the stock low speed jets which I think are 75 and 135 high speeds. My popoff is 34psi. It runs good except for when I ride at more than half throttle for 10+ seconds it will cut out and run out of gas. I checked my fuel filter and lines and fuel pickup everything looks good. The one way valve works like it should. Any ideas? Also how hot should the chamber on my pipe be? Is it better to have it warmer or cooler?
Super Jet Help with fuel issue
- Thread starter doubletrailerz
- Start date
- Location
- Rochester, NY
did you check the little filters inside the carbs? I'd start there...
yea the carbs were just rebuilt with new filters
- Location
- Oakland Twp MI
If you still have a butterfly choke, try pulling it while your riding. If you have a primer, pump it when the engine feels like it’s going to stall or hesitate. If either of these seems to keep it going then you'll know for sure you have a fuel delivery problem. I had a similar problem a few summers ago. I found what looked like lint in the micro filters. I cleaned it out and it ran fine for a while then it started stalling out again. When I took it apart, I found the micro filters were partially clogged again. I would up having to replace the fuel lines and filters because they were starting to deteriorate on the inside.
If you or another person had rebuilt the carbs make sure the screws are set rich for tuning. Usually 1.5 turns on the bottom screw, and 2 turns on the top screws unless you’ve deliberately over jetted the top end. In case there might be dirt trapped in one of the tuning screws, I like to turn the screws all the way in first (DO NOT OVER TIGHTEN) this technique on occasion can break up any debris missed in the carb enough to flush through.
Lastly, your engine needs to be airtight. If you have a leak somewhere in the cases, intake, or carb bases, it will affect (reduce) the pulse pressure. This causes the fuel pump(s) not to be able to draw fuel especially in the mid-throttle range.
If you or another person had rebuilt the carbs make sure the screws are set rich for tuning. Usually 1.5 turns on the bottom screw, and 2 turns on the top screws unless you’ve deliberately over jetted the top end. In case there might be dirt trapped in one of the tuning screws, I like to turn the screws all the way in first (DO NOT OVER TIGHTEN) this technique on occasion can break up any debris missed in the carb enough to flush through.
Lastly, your engine needs to be airtight. If you have a leak somewhere in the cases, intake, or carb bases, it will affect (reduce) the pulse pressure. This causes the fuel pump(s) not to be able to draw fuel especially in the mid-throttle range.
I changed my fuel filter already and I dont have a selector just a line running from the reserve and the on line plugged. And all fuel lines are new.