87 f250 300 straight 6

Asked by Jun 12, 2017 at 10:16 PM about the 1987 Ford F-250

Question type: Maintenance & Repair

Fuel pump went out on truck. Got that fixed and it
ran but rough. Sent injectors in, blew fuel lines out,
had gas tank cleaned and sealed, new spark plugs,
checked all grounds to engine, checked volts to
coil and truck is still running horrible. Can take 4
spark plugs off cap and truck doesn't miss a beat
stays running and running like crap. Help please.
Only 75k on truck and motor.

1 Answer


I assume the distributor cap & rotor button & plug wires & plugs are all good.

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