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Author Topic:   Carb stumbles off the kickI
posted October 27, 2003 05:52 PM
I have a 4150 acky carb floats are set right if you ease in the throttle works fine but on restarts and go hard it stumbles I did check the acc pump springs at wot i could get 015 thous feeler gage in pretty easy how tight should the springs be i got a older carb out and check the springs on that at wot and it was at 005 they were tighter no stumble on the older carb how tight can you go

posted October 28, 2003 08:56 AM
With the throttle closed at idle I just take the clearance out between the pump arm and pump lever. Then check at wide open throttle to make sure there is still some travel (0.015 or so) in the pump diaphragm so as not to tear it up.
You might want to check the shooter size and pump cam on each carb. You might not be getting the same shot on acceleration out of each carb. That could cause your stumble as well. If you have no clearance in your pump arms then I would say this is more likely the problem.

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