‘68 F100 - HELP?!

Asked by Lilwilmothfam Jan 23, 2020 at 07:14 PM about the 1968 Ford F-100

Question type: Maintenance & Repair

‘68 F100 360. Column 3 was changed to a manual
4 at some point. Truck sat for years. Purchased this
for my husband from an old man who obviously
didn’t do a thing to it. Mostly all original bumper to
bumper. We started tinkering and trying to get it
back to drivable. Brakes - done. New EB carb 600.
Manual choke added d/t no electric. New air
cleaner. New plugs/wires. New fuel pump/filter.
New radiator/hoses. New battery.  All these were
put on at different times, with the fuel pump being
the last thing replaced and manual choke done just
before. Here is the issue... the truck has always
started super easy. Before the manual choke was
applied, it would stall at lights and spontaneously at
35’ish. The new carb was looking for the electric
choke, and since it was SOL, the guy suggested
the manual choke - done.  Ran much better.  Few
days later, the fuel pump was spitting gas -
replaced.  The next day we take it down the road.
The faster we go, the rougher it runs. The further we
go, the rougher it runs. Slow to accelerate, jumpy,
motor sounds louder, idles a little high now...  
assuming a bad fuel pump. Anything else it could
be that anybody would want suggest?  The truck
was a smooth ride and it’s very disheartening to
think we just spent all this money and time, just to
mess it up. We know it is old. We know when you
start messing, you kind of never stop, but my gosh
there’s 10 things under this hood and we’ve damn
near replaced them all.

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