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Joined: Aug 05, 2008 Posts: 42 Location: Towanda, Pennsylvania
Posted: Fri Aug 15, 2008 8:36 am Post subject: 1981 Yamaha YT 125 fuel overflowing out the overflow!
Hello, I've tried to figure this out on/off for some time now with no luck! I have a 1981 Yamaha Trimoto YT 125 that leaks fuel out the overflow AFTER I shut it off. I have adjusted the floats with no luck. I have an extra carb. so I even swapped bowls thinking maybe the copper tube had a hole in it somewhere. I checked the float valve and even swapped them with no luck. Floats look good to me, so I'm baffled. Any ideas? Any help is appreciated as usual! Thanks, Jack
Joined: Jun 16, 2008 Posts: 397 Location: Michigan
Posted: Tue Aug 19, 2008 7:37 am Post subject:
I hear ya.
I've done everything possible with my carb but it still leaks a little out of the overflow tubes. I've given up and have learned to live with it until I can afford a carb rebuild kit.
My guess is that a new needle and needle valve is needed. Even if they look okay, it could have minute scratches, allowing gas through.
Also, check your overflow tubes for hairline cracks. A good test is taking the bowl off and filling it with gas and seeing if it leaks.
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