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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
Remove the small pump jet plug to get to the jet so either it can be removed to check it or try to open it up if plugged.
How Sweet the roar of a Chevy four!
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Joined: Jul 2006
Posts: 1,884 Likes: 12
ChatMaster - 1,500
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OP
ChatMaster - 1,500
Joined: Jul 2006
Posts: 1,884 Likes: 12 |
I gave up. I've sent it off to have it looked at.
Jon T.
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Joined: Jul 2006
Posts: 1,884 Likes: 12
ChatMaster - 1,500
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OP
ChatMaster - 1,500
Joined: Jul 2006
Posts: 1,884 Likes: 12 |
We have decided ( with the help of a VCCA expert) that it is not the Carb. The Carb. is fine. So once I get it on I look again at the Fuel Pump. I was told that was probably the problem but I didn't listen. I'll put in a new diaphram and sed. bowl gasket.
Jon T.
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Joined: Jul 2009
Posts: 302 Likes: 4
Backyard Mechanic
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Backyard Mechanic
Joined: Jul 2009
Posts: 302 Likes: 4 |
Remove pump jet plug located on top of carb sitting at an angle. Need nice straight sided electrical screwdriver to remove the jet a No. 72
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Joined: Jul 2006
Posts: 1,884 Likes: 12
ChatMaster - 1,500
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OP
ChatMaster - 1,500
Joined: Jul 2006
Posts: 1,884 Likes: 12 |
Once I remove the Jet then what?
Jon T.
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
If the pump seal at the glass bowl is leaking even slightly the pump output will be affected. I use cork seals and not the neoprene ones sold with most kits.
How Sweet the roar of a Chevy four!
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Joined: Jul 2006
Posts: 1,884 Likes: 12
ChatMaster - 1,500
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OP
ChatMaster - 1,500
Joined: Jul 2006
Posts: 1,884 Likes: 12 |
My cork one was cracked so I found a neoprene one and put it in. When I get my carb. back I'll get a cork gasket. I now think I have an air leak somewhere.
Jon T.
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Joined: Sep 2006
Posts: 1,255 Likes: 10
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: Sep 2006
Posts: 1,255 Likes: 10 |
The '36 Town Sedan we bought in Cottonwood AZ came with several problems in the fuel system that ganged up on me, and probably the PO. One was that the cork gauge float disintegrated and sank to the bottom. Since the little screen in the pump had a hole in it that plugged up everything downstream including the carburetor. The pressed in check valves on the aftermarket fuel pump would not hold so it had to be primed virtually every time it sat for a day. The fuel connection INSIDE the tank rusted a hole in it so that if the tank dropped down to below half full it would suck air along with the gas and the carburetor would starve.
Start with a list of possibilities, and a clear section of hose you can put on the pump inlet and see if it is sucking air.
This is on a nicely restored car we bought from a Chevrolet dealership. Someone spent a lot of money on this, I can only assume they could not get all the little gremlins figured out and gave up. You may be up against some similar problems.
Let the forum know what you find. I can guarantee someone else will have the same, or similar problems. Ours took a new pump, a new tank, a different carburetor, and a fair amount of work.
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