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.
|