wierd noise when normal temperature
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Joined: Oct 2003
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wierd noise when normal temperature
i have a 1972 351c 2bbl it has been rebuilt and is a 400 inside . when i turn my car on in the morning it starts fine and there is nonoise from my engine but as soon as my engine warms up .,i can hear predetonation. i was wondering if there is anything i can do for my carb to help this out. i have the timing set correctly and would like to know what i could do about this. i have a motocraft 2100 carb 2bbl i would also like to know how to adjust the carb in the front of the carb to the left there is a screw and also to the right . which one is the fuel thx.
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Joined: Dec 2001
Posts: 22,436
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From: Louisville,Ky.
You could put a couple size larger jets in it. It is probably running too lean for the extra cubic inches now.
Both screws are the air/fuel mixture. If you back them out, they will richen it up, if you turn them in, it will lean it out. There is one for eah side of the carb.
Jimmy
Both screws are the air/fuel mixture. If you back them out, they will richen it up, if you turn them in, it will lean it out. There is one for eah side of the carb.
Jimmy
