73 engine into 74 buffalo

[tz375]

Could be a number of things including:

Partially blocked slow (pilot) jets
Damaged diaphragm in one carb
Air leak in one or more intake boots
Badly adjusted slow air/fuel screw

I'd start there

[h2thief]

Could be a number of things including:

Partially blocked slow (pilot) jets
Damaged diaphragm in one carb
Air leak in one or more intake boots
Badly adjusted slow air/fuel screw

I'd start there

I cleaned the carbs all the ports and jets looked great...
The carbs were working on the old engine and diaphragms held vacuum...
Intake boots are supple and clamps are tight....
Guess I better check the slow air/fuel screw....

Thanks tz375