1988 Ford F350 testing

1988 FORD F-350
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CE7181T
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Engine Performance problem
1988 Ford F350 Four Wheel Drive Automatic

simple qustion, just bought the truck, had a new crate motor installed by ford 2 years ago, has 2000 miles on motor, previous owner was 84 years old, I was a mechanic for 30 years, although I still have the savy to figure it out I now longer have acess to alldata o a lab scope
when i do about 50 miles per hour and give it gas it does not seem to want to go and i noticed it seems to stumble, the fuel pressue is 40 psi , with 3 new pumps and filter, I suspect Ing. problem however cannot find the tests i need to check coil, or module restiance
Sep 4, 2010 at 12:26 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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