Hey 175 guru's, just getting a 1976 up and running again. Starts first kick and ticks over like a swiss watch....but open throttle past 1/4 and it just dies out. Is this the classic "o" ring around the main jet problem, or something else. Carb has been stripped and carbie clean/airline blown out.

Could be, but not enough info to know for sure.

How quickly is the throttle being opened?

What happens when you try it with the starting circuit in service?

It is doing the same thing hot and cold?

Yeh, does it hot or cold. If turn throttle gently in lower gears up to 1/4 open, then motor revs cleanly, but go any more and will balk.

 

Yes it's the classic o ring around the main jet holder

Thanks Bmonk, I'll grab 1 when the dealer opens in New Year.....or will any 'o' ring the right size stand up to the fuel?

I usually just tell the person behind the counter what it's for and they sell me an o ring made of the right stuff