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Re: Problem starting truck after sitting overnight.
To be specific, the "squirters" are called "accelerator pump nozzles". They are part of the accelerator pump circuit. It's just easier to say (type) squirters. The accelerator pump itself is located on the left front corner of the carb. the attached picture shows one that someone "re-built" & installed the pump diaphragm upside down. If you look closely you can see the rebuilder (I use that term loosely) also bent the tip of the metering rod. Believe it or not, this engine ran pretty good, just a little rich due to the needle.
As far as the gasoline in the fuel bowls evaporating overnite - not gonna happen. All carburetors are vented, the vent system is controlled on newer carbs to reduce evaporative emissions. (Edelbrock Performer series carbs are open vent) But, regardless of the type of venting, you will not lose enough fuel overnite to make a difference. If you see fuel coming out of the accelertor pump nozzles you have fuel in the bowls.
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