Need help tuning my Vento GT-250 (Same as Hawk)

[XLsior]

With his listed mods 37/115 would be lean on a PE28. Might be fine with a PZ30.

Nibbi PE28/FL has an enrichment circuit rather than a butterfly choke.

Without checking the plug its hard to assume whether its a flood out or a lean out. Or just using the "choke" incorrectly.

Maybe the fuel supply is restricted (blocked filter) so the opening the throttle starves the fuel mix...

It's all just guessing without a true baseline.

[skirmich]

Originally Posted by XLsior

With his listed mods 37/115 would be lean on a PE28. Might be fine with a PZ30.

Nibbi PE28/FL has an enrichment circuit rather than a butterfly choke.

Without checking the plug its hard to assume whether its a flood out or a lean out. Or just using the "choke" incorrectly.

Maybe the fuel supply is restricted (blocked filter) so the opening the throttle starves the fuel mix...

It's all just guessing without a true baseline.

I put a brand new plug yesterday so it only has today use, I will pull it and take a picture for you.