The Ford Barn

Habusailor · 10-16-2024, 06:58 PM

What causes the carburetor to loose its fuel and needs priming to start, if it has not run for a week or two?

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paul2748 · 10-16-2024, 07:05 PM

Power valve

Kube · 10-16-2024, 07:29 PM

The fuel in the bowl can also evaporate. I pull the choke closed when I shut the engine down.

Most likely the power valve as has been advised.

Habusailor · 10-17-2024, 07:32 AM

Power valve thanks.

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Kube · 10-17-2024, 08:01 AM

Quote:

Originally Posted by Habusailor

Power valve thanks.

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Be aware that many, perhaps most, new power valves will not seal as they are delivered. I believe most folks get a "good one" from Daytona.

1942deluxe · 10-17-2024, 08:09 AM

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Mike, my 48 started hard when it sat for any extended period. I followed your advice about the choke and it now starts much easier! Thank you.

Planojc · 10-17-2024, 08:51 AM

This can happen even if the power valve is not leaking due to as Kube said, evaporation. Not 100% sure but it seems that the ethanol gas evaporates quicker than regular gas. That's why many add an electric fuel pump to prime the carb.

10-16-2024, 06:58 PM	#1
Habusailor Senior Member Join Date: Dec 2016 Location: Fargo North Dakota Posts: 272	Carb leaks What causes the carburetor to loose its fuel and needs priming to start, if it has not run for a week or two? Sent from my iPhone using Tapatalk

10-16-2024, 07:05 PM	#2
paul2748 Senior Member Join Date: May 2010 Location: Midland Park, NJ Posts: 4,290	Re: Carb leaks Power valve __________________ 48 Ford Conv 56 Tbird 54 Ford Victoria

10-16-2024, 07:29 PM	#3
Kube Senior Member Join Date: May 2010 Location: Wisconsin, USA Posts: 9,853	Re: Carb leaks The fuel in the bowl can also evaporate. I pull the choke closed when I shut the engine down. Most likely the power valve as has been advised. __________________ "I can explain it for you. However, I can't understand it for you".

10-17-2024, 07:32 AM	#4
Habusailor Senior Member Join Date: Dec 2016 Location: Fargo North Dakota Posts: 272	Re: Carb leaks Power valve thanks. Sent from my iPhone using Tapatalk

10-17-2024, 08:09 AM	#6
1942deluxe Senior Member Join Date: Jan 2011 Location: Albion, PA Posts: 986	Re: Carb leaks Sponsored Links (Register now to hide all advertisements) Mike, my 48 started hard when it sat for any extended period. I followed your advice about the choke and it now starts much easier! Thank you.

10-17-2024, 08:51 AM	#7
Planojc Senior Member Join Date: May 2010 Location: Plano, Texas Posts: 1,062	Re: Carb leaks This can happen even if the power valve is not leaking due to as Kube said, evaporation. Not 100% sure but it seems that the ethanol gas evaporates quicker than regular gas. That's why many add an electric fuel pump to prime the carb.