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Can someone shed some light on this?. I've got an 1980 F250 with the 351M. Just Rebuilt carb and when I went to check the float wet level, noticed the right hand side main jet bubbling. Is there a reason, or something I have overlokoked?
Just an educated guess: Did you run into tiny steel checkballs and are they installed properly because they are of different sizes?
Seems to me that your getting fuel feedback pressure from the chambers in the carb body, sometimes from the incomming fuel or upon acceleration from the piston being pushed down.
Last edited by crazypaw; Mar 24, 2008 at 08:51 PM.
Reason: Welcome