Question about 1988 Ford F 350

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I have an 1988 ford E-350 7.5L. After an hour or so of driving it develops a skip which gets worse until the engine stops running. It then takes 20minutes or more before you can start the engine. I have replaced the high pressure fuel pump as well as the ignition coil and the electronic ignition module (TFI) the low pressure fuel pump was bypassed at one point with no positive results either. Please help!!!!

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  • Ford Master
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Check for a pumped up lifter. It will keep a valve from closing completely causing the symptoms you have.

Posted on Jul 28, 2017

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Posted on Jan 02, 2017

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caroldon
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SOURCE: I have an 1988 ford

Please check and see if there is any impurities or water content on the fuel. Also check the spark intensity and the fuel pressure when the engine dies off.
This must give an indication of the possible failure of the engine.
The output from the electronic ignition unit - LT- to the coil must be checked using a multimeter. If absent then it must be replaced. If present then check the HT coil and the HT output. Th coil also can heat with shorted coils or poor insulation and reduce the spark.
finally have the pump calibrated and checked.

Posted on Jul 21, 2011

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1988 FORD 350 7 5L 460cid V8 Catalytic Converter RockAuto

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