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Old 10-02-2017, 10:02 PM
Idle Idle is offline
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Join Date: Oct 2012
Posts: 21,821
The trouble is in your floats or needles. Perhaps both.

The needle is not dropping into the seat so when you crank the engine and the fuel pump comes on you are getting full pressure in your carb. And the fuel is then shooting up through a vent tube.

Try pulling the top plates off your carbs and cleaning out the bowls. Clean the needle or just replace it; I don't think they are expensive. Also clean out the seat or replace it. You can usually but the needle and seat as a package but on these carbs you might have to buy an entire rebuild kit to get just the needle and seat.

This is normally found after a car has been sitting and the gas in the bowl has jelled a bit.
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