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Old 01-06-2009, 17:07   #1 (permalink)
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72 ford f100 problem

I have a 72 ford f100 with 360 2bbl 500cfm holley carb. manual choke on it with 255+ miles. Its has 1 year old timing gears and chain. The problem is when it gets hot it stalls out and acts if its losing power somewhere especially on a uphill. any suggestions
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Old 01-06-2009, 18:37   #2 (permalink)
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Re: 72 ford f100 problem

See if the fuel line from the tank to the fuel pump runs close to the exhaust. It might be vapor locking. The fuel pump itself might be going bad.
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Old 01-07-2009, 03:58   #3 (permalink)
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Re: 72 ford f100 problem

The coil may be breaking down when it gets hot. Also points and condenser are cheap and often give trouble. Make sure timing is correct, but that is probably ok if it runs fine before it gets hot.
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Old 01-07-2009, 06:00   #4 (permalink)
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Re: 72 ford f100 problem

it runs fine before gets hot. I know when the mechanic replaced the timing gears and chain he said found metal shavings in or inside the fuel pump. also I forgot to mention that the truck isnt grounded. I had it grounded but when it hot and acted up again. I pulled the wire that grounded from neg. post of the battery to the frame but I can hook it back up though. The fuse inline coming off isnt hooked up either because all it does blow fuses when grounding it to the firewall.
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Old 01-07-2009, 06:05   #5 (permalink)
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Re: 72 ford f100 problem

I forgot to mention that when gets hot and cuts off its hard restart when hot until it cools for a little bit(5-10 minutes).
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Old 01-07-2009, 09:27   #6 (permalink)
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Re: 72 ford f100 problem

I'm either mis-understanding badly, or it's just not making sense to me. The vehicle needs to be grounded. If you are hooking a fused line to ground, well, it should blow. A fused line is positive and if you ground it, either a fuse will blow or wires will melt. On a
'72 model, the fuel pump should be externally mounted, so are the metal shavings in the fuel pump?? or did he see them looking into the block where the pump mounts?
What do you mean by "The fuse inline coming off isnt hooked up "
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Old 01-07-2009, 11:35   #7 (permalink)
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Re: 72 ford f100 problem

Everytime I ground the wire with the in line fuse holder to the firewall it blows a fuse. The mechanic said he seen metal shavings inside the fuel pump(without having the pump apart, the part that goes inside the timing cover) when changing the timing gears and chain.
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Old 01-07-2009, 11:42   #8 (permalink)
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Re: 72 ford f100 problem

The wire with the inline fuse is a hot wire and does not go to ground.

Can you trace that wire and tell me what it is hooked to? Battery, Solenoid ect. Photos would be a plus +

If you have any doubts about the fuel pump replace it. Pump is around 35 bucks
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Old 01-07-2009, 11:48   #9 (permalink)
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Re: 72 ford f100 problem

wire goes to the solenoid on the fender wall.
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Old 01-07-2009, 11:55   #10 (permalink)
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Re: 72 ford f100 problem

Does it look like something that has been added on or part of the original wiring?
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