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Old 02-17-2013, 04:14 PM
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305 and Edelbrock 1406 carb

I need the collective assistance of the carburater gurus ....ii have an unusual problem with the engine and carb combination above. With the motor at operating temp and trans in neutral, motor seems to jump in rpm as throttle is advanced. While SLOWLY opening linkage from idle the engine will SLOWLY increase rpm...then about 1/4 inch off idle (no tach) the engine seems to jump up as if it suddenly gets a surge of gas. This is not noticable under load, but im sure its happening while driving as well. Already checked for vaccum leak and manifold leaks so its not that...just cant figure out the surge !

Any ideas ??????

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