The Ford Barn

ntqlvr · 10-29-2010, 05:16 PM

Hi, my 41 Merc original carburetor goes dry in the bowl after a few days, and makes it hard to start without priming. Would a new Stromberg carburetor be the answer over trying to rebuild the old one? Any suggestions?

J Franklin · 10-29-2010, 05:26 PM

Where is the gasoline going? It shouldn't evaporate that fast. If you are having to crank a lot to get gas to the carb you might have a fuel line connection (loose) that is allowing air to let the fuel to siphon back into the tank. If your carb is not leaking from the bowl a new one won't change things. Check that the fuel pump is working properly.

Dee · 10-29-2010, 05:50 PM

Maybe a leak either at the jet plugs on the front of the lower body or the power valve. If the power valve is "original" or of non modern materials it could be the culprit.

ntqlvr · 10-29-2010, 05:58 PM

I pulled the top of the carb off and the bowl was dry. I put gas in the bowl, and put the top back on and it started and runs fine. But if I set it up for a few days the bowl drys out again. I assume the power valve is that part screwed into the bottom of the bowl, and it definitely is old.

uncle max · 10-29-2010, 06:27 PM

Special deals on the New 97's for Fordbarners, if you decide to go that way...

BCCHOPIT · 10-29-2010, 06:49 PM

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Quote:

Originally Posted by uncle max

Special deals on the New 97's for Fordbarners, if you decide to go that way...

After seeing all the very nice pics on here of the old carbs you have rebuilt. Way would we wont that new shit

Are the new ones any better then the old?

Flathead Fever · 10-29-2010, 09:27 PM

Take the carb off. Make a little stand using three long bolts and nuts so you can see the bottom of the carb without picking it up. Remove the top of the carb and fill the bowl with fuel, if it is leaking out the bottom you should see it.

41ford1 · 10-30-2010, 08:37 AM

Even with the current gasohol you should start easy for about a week. The most likely culprit is the power valve or it's gasket. The ones that come in the kits don't fit properly without rework at the base of the threads. You can get the reworked PVs from KenCT on here. Iv'e replaced the fiber gasket with a nylon one. No leaks.

ken ct · 10-30-2010, 09:21 AM

PS, 41ford1,I do not modify my PV's i provide the proper gasket for it so it fits and seals properly also can provide a special lead gasket which Holly recomends in my yrs old Holly parts manual for $2 additional cost if requested by the customer. ken ct.

G.M. · 10-30-2010, 07:24 PM

Max The new Stromberg you sold to the guy with the 34 solved his problem of several years and he is a happy camper now. I understand you rebuilt his old one for a spare. That makes good sense for tours. He said he sent you pictures of his spark plugs and you zeroed in on the problem. G.M.

10-29-2010, 05:16 PM	#1
ntqlvr Member Join Date: May 2010 Posts: 54	carburetor problems Hi, my 41 Merc original carburetor goes dry in the bowl after a few days, and makes it hard to start without priming. Would a new Stromberg carburetor be the answer over trying to rebuild the old one? Any suggestions?

10-29-2010, 05:26 PM	#2
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,966	Re: carburetor problems Where is the gasoline going? It shouldn't evaporate that fast. If you are having to crank a lot to get gas to the carb you might have a fuel line connection (loose) that is allowing air to let the fuel to siphon back into the tank. If your carb is not leaking from the bowl a new one won't change things. Check that the fuel pump is working properly.

10-29-2010, 05:50 PM	#3
Dee Member Join Date: May 2010 Location: Port Orchard, WA Posts: 67	Re: carburetor problems Maybe a leak either at the jet plugs on the front of the lower body or the power valve. If the power valve is "original" or of non modern materials it could be the culprit.

10-29-2010, 05:58 PM	#4
ntqlvr Member Join Date: May 2010 Posts: 54	Re: carburetor problems I pulled the top of the carb off and the bowl was dry. I put gas in the bowl, and put the top back on and it started and runs fine. But if I set it up for a few days the bowl drys out again. I assume the power valve is that part screwed into the bottom of the bowl, and it definitely is old.

10-29-2010, 06:27 PM	#5
uncle max Senior Member Join Date: May 2010 Location: SLC Utah Posts: 798	Re: carburetor problems Special deals on the New 97's for Fordbarners, if you decide to go that way... __________________ RIP Tyler... My Son, Helper & Best Friend. Feb '78 to Father's Day '10. www.97-express.com ~ [email protected]

10-29-2010, 09:27 PM	#7
Flathead Fever Senior Member Join Date: May 2010 Location: Yucaipa, CA Posts: 1,095	Re: carburetor problems Take the carb off. Make a little stand using three long bolts and nuts so you can see the bottom of the carb without picking it up. Remove the top of the carb and fill the bowl with fuel, if it is leaking out the bottom you should see it. Last edited by Flathead Fever; 10-29-2010 at 10:12 PM.

10-30-2010, 08:37 AM	#8
41ford1 Senior Member Join Date: May 2010 Location: ManchVegas, New Hampshah Posts: 1,589	Re: carburetor problems Even with the current gasohol you should start easy for about a week. The most likely culprit is the power valve or it's gasket. The ones that come in the kits don't fit properly without rework at the base of the threads. You can get the reworked PVs from KenCT on here. Iv'e replaced the fiber gasket with a nylon one. No leaks.

10-30-2010, 09:21 AM	#9
ken ct BANNED Join Date: May 2010 Location: stratford,ct Posts: 5,971	Re: carburetor problems PS, 41ford1,I do not modify my PV's i provide the proper gasket for it so it fits and seals properly also can provide a special lead gasket which Holly recomends in my yrs old Holly parts manual for $2 additional cost if requested by the customer. ken ct.

10-30-2010, 07:24 PM	#10
G.M. Senior Member Join Date: May 2010 Location: Florida and Penna. Posts: 4,471	Re: carburetor problems Max The new Stromberg you sold to the guy with the 34 solved his problem of several years and he is a happy camper now. I understand you rebuilt his old one for a spare. That makes good sense for tours. He said he sent you pictures of his spark plugs and you zeroed in on the problem. G.M. __________________ www.fordcollector.com