Possible carb issue?
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Joined: Jul 2008
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From: Indiana
Possible carb issue?
I have recently upgraded my cam in a fe 390 but now I seem to have a new problem. Low rpm and slow acceleration have suffered dramatically. I understand it will have a loping at idle as it is a couple steps above stock. There is a noticeable sucking noise like a vacuum leak that I can even hear in the cab while driving coming from the carb. Faster acceleration or higher rpms lessens the effect. And noticeable lag time if you just stomp on it. I run a Edlebrock 750 with manual choke. 
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