1991 Ford Truck F250 Engine Hesitation

1991 FORD TRUCK
10,800 MILES • V8 • 2WD • AUTOMATIC
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OLDTREE
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Well first I was advised the fuel filter for an F250 was on the frame rail directly below the driver's seat. Not so. It was right on the carb and I felt pretty dumb when I saw it. I was standing in front of the engine staring at it and wondering where it was. Kinda like looking for the eyeglasses when your wearing them.

Got new filter in and finally after much grinding got the thing up and purring. It took a new battery and 20 minutes of starting attempts to finally get it to stay running. Start and run for 5 seconds. Start and run for 10 seconds. Start and run for 20 seconds. I think the trouble I had starting should be pointing at something specific. Bad fuel?

Now I'm having problem with engine hesitation when I try to accelerate - even the slightest push down on the gas gives a quick engine die-out followed by a re-catch. Sometimes no re-catch. I've been stalling in left-turn on-coming traffic with a dead engine - of course it starts right up again.

Also, I have to warm up the engine for a very long time before I can shift into gear without the engine going dead. As an old Dakota farm boy, I know a big V8 takes a bunch of warming up, but this is an extreme amount of time. It will sit and idle purr for 15 minutes. The moment I touch the gas or shift it will die.

Thing acts like my new fuel filter is plugged up again. Lets enough fuel through to run near idle but but not to pass a larger flow when I accelerate.

What is it and what is my check sequence? Bad filter, bad fuel, timing out of whack? Thanks in advance for help. Thank-you to Blacktop555 for last response.
Oct 29, 2008 at 9:15 PM
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RASMATAZ
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Hi Oldtree and welcome to 2carpros

Lets test the fuel pressure makes sure its within specs/throttle position and manifold absolute pressure sensors
Oct 29, 2008 at 10:03 PM