I have a 115HP,2stroke, 1995 yamaha. Ran great for the last 2 years and the first trip this year.
Engine starts and idles perfectly and runs up to 20RPM just right. Last week when pushing the throttle to 30-45rpm the engine would hesitate about 5-15 sec (but not drop rpms) but then accelerate all at once and run perfectly.
Today, It did the same but after a fishing drift and restart it would run great to 20rpm (throttle was in the expected position). When pushing past that the engine would drop rpms and stall. Restarted fine and the behavior repeated (after about 5 tries it hesitated and got to high rpms). Then after another drift, I had the stalling behavior, but it idled enough to get me home at 20rpm
I put a fresh parker fuel water separator each year and the fuel is fresh from portable tanks. (and since it idles just fine I doubt its fuel).
Any ideas? I'm thinking fuel pump but would like to cover all bases before ordering parts.
Thanks
JP
Engine starts and idles perfectly and runs up to 20RPM just right. Last week when pushing the throttle to 30-45rpm the engine would hesitate about 5-15 sec (but not drop rpms) but then accelerate all at once and run perfectly.
Today, It did the same but after a fishing drift and restart it would run great to 20rpm (throttle was in the expected position). When pushing past that the engine would drop rpms and stall. Restarted fine and the behavior repeated (after about 5 tries it hesitated and got to high rpms). Then after another drift, I had the stalling behavior, but it idled enough to get me home at 20rpm
I put a fresh parker fuel water separator each year and the fuel is fresh from portable tanks. (and since it idles just fine I doubt its fuel).
Any ideas? I'm thinking fuel pump but would like to cover all bases before ordering parts.
Thanks
JP