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'58 Plymouth WCFB carb flooding
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Chrome58
Posted 2018-04-22 6:07 AM (#562057)
Subject: '58 Plymouth WCFB carb flooding



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Posts: 1166
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Location: Belgium, 40 miles south of Brussels
Hi everyone,

Last week, my car was at idle at a red light and suddenly the engine died. I thought it was an empty gas tank problem (since my gauge is not working), so I put 20 liters (5 gallons) in the gas tank. The engine started with difficulty but died again at idle less than a mile further. Upon opening the hood, I saw that gas had leaked out of the primary carb (I have a 2x4 WCFB config) and onto the manifold. After reading a bit here and there, I'm thinking I might have a case of "carb flooding".

I must say that the 2 WCFB carbs were completely rebuild by a professional during the restoration, a few years ago, and that the primary carb suffered during shipment and ended up with a broken wall at the front (below the "CAR-bure-TER" stamping), but it was completely repaired, and I don't think it's the issue, since I drove the car 750 miles since then.

Anyway, I disassembled the primary carb this morning, and I can't find anything wrong.
The floaters and the needles are OK. But I don't know where else to look.

What should I look for ?

Edited by Chrome58 2018-04-22 10:17 AM




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Attachments P1050283b.JPG (210KB - 7 downloads)
Attachments P1050284b.JPG (211KB - 7 downloads)
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57plymouth
Posted 2018-04-22 7:31 AM (#562060 - in reply to #562057)
Subject: Re: '58 Plymouth carb flooding



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Posts: 3438
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Location: Blythewood, SC
Sounds like trash in the needle and seat. You already have it apart. Just rebuild it and be done with it.
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RUSTORICHES
Posted 2018-04-22 2:42 PM (#562076 - in reply to #562057)
Subject: Re: '58 Plymouth WCFB carb flooding


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Posts: 453
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Location: Alberta
I don't really know exactly how you have the carbs set up , but it appears that your primary carb only has the choke assembly (typical) if it's an automatic choke then check your adjustments or in fact the manifold heat riser could be faulty or the choke is sticky.Double check the floats the body of the carb could be warped and as engine heats up the choke may not opening. Here's a website for parts you can check them out I haven't used them yet[ http://www.carburetion.com/WCFB.asp] maybe someone on this forum has and has a review of service.

Edited by RUSTORICHES 2018-04-22 2:58 PM
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ronbo97
Posted 2018-04-22 10:25 PM (#562089 - in reply to #562076)
Subject: Re: '58 Plymouth WCFB carb flooding


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Posts: 3133
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Location: Connecticut

How much pressure is your fuel pump putting out ? If it's over 7 lbs, then it could cause this condition.

Ron

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Chrome58
Posted 2018-04-23 3:27 AM (#562103 - in reply to #562089)
Subject: Re: '58 Plymouth WCFB carb flooding



Elite Veteran

Posts: 1166
10001002525
Location: Belgium, 40 miles south of Brussels
RUSTORICHES - 2018-04-22 8:42 PM

if it's an automatic choke then check your adjustments or in fact the manifold heat riser could be faulty or the choke is sticky.

Yes it's an automatic choke, and it's an electric one I bought off eBay.
The manifold heat riser has been closed, and is not used anymore.

RUSTORICHES - 2018-04-22 8:42 PM

Double check the floats the body of the carb could be warped and as engine heats up the choke may not opening.

I'll double check the floats.
The body does not seem warped, although I'll double check that as well.

ronbo97 - 2018-04-23 4:25 AM

How much pressure is your fuel pump putting out ? If it's over 7 lbs, then it could cause this condition.

Interesting lead, but I have no way of measuring the fuel pump pressure ...
Furthermore, everything was working correctly so far, and I'm not sure how the fuel pump pressure could rise suddenly.
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