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EFV-8 Club Forum / 1940 Ford Discussion / 40 loading up fuel/ flooding out while driving

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Discussion Topic: 40 loading up fuel/ flooding out while driving -- page: 1 2

DMMuir

02-15-2025 @ 1:43 PM

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Took it apart, actually just took the top of the carb off on the car. Readjusted the float. she's running like a dream now.

Not sure. I adjusted to the spec on the instructions, but obviously that was too high. first adjustment went too low and she wouldn't stay running after starting. went in the middle... seems to be the spot.

Thanks for the advice.

@Kubes40, you were dead on with your first thought.

DMMuir

02-14-2025 @ 2:45 PM

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I will give it a shot. New needle and seat, new power valve. all new gaskets. thorough cleaning, had all passages open and clear. I will go try the float adjustment.

RAK402

02-13-2025 @ 1:20 PM

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I have been through what 40 Coupe and Carcrazy described.

In my case, got crud in the carb, which caused the engine run lousy and ultimately to back fire.

Cleaned the carb up and the backfire was gone, but it ran poorly at idle-it also coughed out the exhaust periodically when idling. The idle was inconsistent.

From this forum I learned that the backfire could damage the power valve. I bought a couple of the from Daytona in Florida.

Changed the power valve and it runs and idles extremely well now.

I would check the needle and seat, and float level that kubes40 suggested (I would check all three while the carb is out).

40 Coupe

02-12-2025 @ 5:31 AM

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If it seems flooded after sitting for a short period making the car hard to start and runs extremely rich it is possible the power valve is ruptured or it's gasket is leaking. Daytona parts in Fla has the best rebuilding kits for the proper 40 Carb which is the 91-99.

carcrazy

02-11-2025 @ 1:53 PM

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Here comes what you might think is a dumb question. When the carburetor was put back together, was the gasket installed correctly so that all of the holes were connected without leaks between the airhorn and the main body?

DMMuir

02-11-2025 @ 1:06 PM

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new fuel tank and line. factory pump, good filter in the system as well.

the electrical/ignition seems good. all as good as it can for it's age!

DMMuir

02-11-2025 @ 1:05 PM

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Not sure what a groose jet is. I will look it up.

factory/original fuel pump

DMMuir

02-11-2025 @ 1:04 PM

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if it's idling or running in the driveway it seems fine. Problem only seems to come up when driving, and then pretty quickly.

carcrazy

02-11-2025 @ 11:01 AM

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Has the vehicle experienced any induction system backfires? If so, the backfire may have blown out the diaphragm in the power valve which would cause excessive fuel in the intake manifold and loading up.

37RAGTOPMAN

02-11-2025 @ 6:40 AM

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do you have a good fuel filter before the fuel pump ?
maybe you have particles of dirt in the system.,? affecting the needle and seat ?
how old is the gas,?
also check the fuel pump pressure,do you have a electric pump ?
hope this helps 37Ragtopman
rule of thumb
also remember that most fuel problems are electrical
how it the coil and points, ?? distributer been rebuilt lately ?
all wiring clean and tight ?

This message was edited by 37RAGTOPMAN on 2-11-25 @ 6:46 AM

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