I'm thinking fuel pump:

[spandi]

Good luck with that, (I hope this solves the malfunction.)

[richardthescooter1]

Thanks, let you know how it goes.

[oldkid]

Fuel pump FYI. My 150cc would not run long at WOT when new because of lack of fuel. Sometimes I had to reduce to about 80% to get up the TN hills. I added a low pressure electric pump and pressure regulator and no more problems. Runs much better now. My pump only had power if switch is on. In addition I use a toggle switch to turn off pump when I want the carb. empty for storage.

[Guest_3]

Just a heads-up . You can get any Mikuni fuel pump or rebuild kit at most snowmobile shops.

[smoak]

did you order the electric pump? Let us know about the setup, as I am curious if it will flood the carb.

Smoak

[richardthescooter1]

Hi Smoak, I just went with the vacuum pump this time, its the DF44 Mikuni, test drove yesterday, got 60-65 easy, but climbing a big hill, it did choke twice but didn't shut off, I had my a/f set at 3 turns out, so last night I turn a 1/4 turn leaner to see if that helps.

[smoak]

Originally Posted by richardthescooter1

Hi Smoak, I just went with the vacuum pump this time, its the DF44 Mikuni, test drove yesterday, got 60-65 easy, but climbing a big hill, it did choke twice but didn't shut off, I had my a/f set at 3 turns out, so last night I turn a 1/4 turn leaner to see if that helps.

That is exactly the one I put on mine. I was very happy with the pump, it made a huge difference in my startup. I haven't yet had the opportunity to get my bike in the 60's or 70's yet to see how it does... I guess I need too so I can see how it acts at higher speeds.

I am assuming that you have replaced the vacuum lines? A new strong pump like that might be collapsing weak vac lines.

Smoak

[richardthescooter1]

Well Smoak, That pump made a big difference. After turning the a/f 1/4 turn leaner last night made the difference, test drove the scoot today and she is running great, one more test tomorrow, going to work and climbing those hill, let you know how it goes.

[spandi]

Congratulations! Finally!

[richardthescooter1]

Took scoot to work today, and it ran great and I also conquered the hill.

[scootnwinn]

Awesome and yes finally