CARB HELP

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Sep 24, 2001 | 02:02 PM

keporter

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Senior User

Joined: Sep 2001

Posts: 146

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From: Adrian, Mi U.S.A.

CARB HELP

Hello,I have been trying to get my '64 F100 going for two weeks now.It has a 1987 351W engine that has no emission stuff on it except the EGR valve. The problem I am now having is that while running fuel starts coming out of the two vaccumm ports at the top of the four barrel carb. I thought maybe the float was stuck or it needed rebuilt so we installed a 2 barrel off a running unit to this engine, but it to starts pumping fuel out of any spot it can (vacuum ports). I'm assuming I either have to much pressure or not enough vacumm. Any suggestions on what I can do to solve this would be greatly appreciated.

Sep 24, 2001 | 03:53 PM

cobraguy

Posting Guru

Joined: Dec 2000

Posts: 1,793

Likes: 2

From: San Diego CA

CARB HELP

sounds like too much fuel pressure. Are you running an electric fuel pump? Check your feul pressure with a gauge, if it's over 6psi it's too much and you will need a fuel pressure regulator.

Sep 24, 2001 | 06:00 PM

keporter

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Senior User

Joined: Sep 2001

Posts: 146

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From: Adrian, Mi U.S.A.

CARB HELP

The fuel pump is mechanical bolted to the block. I'm going to have the fuel pressure checked tomorrow. The engine ran before they took it out of the previous van. No known problems. This is why it's puzzling me, as I didn't do anything but install it exactly like it came out. Minus, of course all the emission stuff which was removed before I got it.

Sep 24, 2001 | 10:29 PM

jbhf250

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Joined: Oct 1999

Posts: 917

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From: Kelseyville USA

CARB HELP

Most carbs will only handle 7-8 PSI MAX.....

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