I have not had the pump problem on a 6 but some time ago I had a rochester on a 283 that acted up or hesitated. Back then I simply bent the little rod to set the pump further down in the hole and it worked much better ....for a while.

Denny, well, at least this is good reading and Educational smile I can hardly wait till you find the problem....or the fix!!

1937 Chevy Pickup
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1952 Chevy Panel
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1950 Chevy Coupe
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I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile