283 Chevy Small Block Hesitation





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Uploaded on Apr 21, 2011

Looking for a little help with the hesitation on my 1960 283ci small block Chevy. Looks like the accelerator pump is not squirting enough fuel -but why? I took the carb apart and cleaned it. I could make the accel pump squirt fuel ok on the bench. Here are a couple of things I wonder about:

1. Is there an issue with the float level which is not keeping enough gas in the carb to prime the accel pump?

2. Fuel pump looks kind of weak -but once the revs are up it seems to keep up.

3. I can wiggle the rod that holds the butterfly valves, so I think there may be a leak there.

This is a Rochester 4 Jet.

Should I just figure this thing is worn out and buy a Holley?

Thanks in advance for any input.



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