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Author Topic:   Fuel Stumble?
posted September 26, 2004 12:15 PM
Running alcohol with BLP belt drive pump. Car is stumbling on starts, restarts, & low rmps. Anyone have any ideas what may be the problem?

I have tried 3 different carbs, nothing seems to help.

Thanks, Scotty

posted September 26, 2004 02:11 PM
pull the fuel lines going into the carb and start the motor and check to see if it is pumping a steady flow of fuel and if it isn't check the pick up and work your way forward and if it is ok your geuss is as good as mine

posted September 26, 2004 02:30 PM
are you stomping on the gas when this happens? if your running a light tranny it'll do it... also check to make sure you have no vaccum leaks

posted September 26, 2004 06:31 PM
I have a brinn tranny ,don't have any vaccum leaks.when you stomp it it seems to be worse than when I ease into it,the problem is they leave me on the starts while I'm having to ease on it! any suggestions?

posted September 27, 2004 10:35 AM
Just my couple pennies, but sounds like you might have an accelorator pump issue. When you stomp the gas, you're creating a major vacuum drop than when you open it slowly. Has that part of the system been checked out? One other area that might be a problem is the metering system being to rich. You could be loading up the engine in the lower RPM's and when you gag it, you drown it with the accelorator pump until it gets enough air to clean itself out.