New 41 owner, gas issues. Lol.

[Vanspeed]

Hey guys, I recently bought a 41 Tudor and it is a great car. My issue I am having is if I let the car sit for longer than 2 days, I need gas poured down the carb to start it. I have read about using a electric pump to start it but that seems like a band aid to me. These cars when new started after days of rest. What needs to be addressed here? Fuel pump? Car runs great once the gas is flowing.

[Russ/40]

The most likely cause is the power valve leaking and draining the bowl of gas. Another common cause is the alcohol gas is boiling out after shutdown. A non metallic spacer under the carb often works. Good places to start. I got fed up with the problem and put a Stromberg 48 on mine. Starts right up all the time.

[jrhaelig]

The carb guys will check in shortly with good advice about heat spacers & evaporation of modern gas, but before they do I'd like to suggest air leaks letting your fuel line lose prime.

There's that flex line between the steel line & the pump as the "prime" suspect. Then there's the pump itself, followed by wherever else there is rubber or a coupler.

It gets more complicated after that, but those seem to be the place to start.

P.S - looks like Russ posted while I was typing!!

[40cpe]

Originally Posted by Russ/40

I got fed up with the problem and put a Stromberg 48 on mine.

Russ, what is unique about a 48 to eliminate the corn gas evaporating?

[Russ/40]

Originally Posted by 40cpe

Russ, what is unique about a 48 to eliminate the corn gas evaporating?

I haven't had the evaporating, or boiling problems some others have had, so my reason for going to the 48 has strictly been power valve issues. The Stromberg has a mechanical power valve not prone to the sealing issues we have with the Holly type in the 94s. My '40 doesn't run hot so I havent had the heat soak boiling problems.

[tubman]

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Just because the power valve is new, don't assume it works properly or fits right. The later 4 BBL Holleys used a power valve that looks very similar, but doesn't seat and seal the same way. I have also had problems with 2100/2110 power valves in 94's.

[Cecil/WV]

Fuel pump solves the priming problem. But not the leakdown.