I have a 1989 F150 XLT Lariat with a 5.0 EFI engine. It started sputtering and then died as if it were a fuel filter. So far I have changed the filter, in tank fuel pump, high-pressure fuel pump,

John Roper

Asked by Dec 04, 2014 at 10:49 PM about the 1989 Ford F-150

Question type: Maintenance & Repair

Fuel pressure regulator, and the PCM
(had an extra). Fuel pressure wont rise
above 23 psi. Will start using starter
fluid. With starter engaged battery reads
10.87 volts and 597 amps at battery,
cylinoid, and at the starter.  Im lost. Any

1 Answer


Check the EGR riser pipe to be sure it's not cracked or clogged with carbon. Try Lucas Deep Clean.

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