1973 9.5 Johnson temp loss of power question

smallblock

Seaman
Joined
Sep 5, 2009
Messages
57
Hello, I have just finished this motor. Carb, coils,points,condensors,etc. It starts mint and runs great. But every once in a while the rpms drop by maybe a quarter temperarily and then go back up, probably for like 3-4 seconds. I was thinking it was the fuel pump because the first time, I pumped the bulb it came out of it but when it happened again it did not so I think it was coincidental. Also I have heard before of this problem having to do with exaust leaking back into the cowl but I dont think thats it. Any ideas ,comments or anything will be appreciated. (Also I am running 4's on this motor on advise that 8's run to hot) Thanks in advance!
 
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