1987 Nissan Truck fuel

1987 NISSAN TRUCK
160,000 MILES • 4 CYL • 4WD • MANUAL
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JLAWSON016
  • MEMBER
  • 1 POST
This truck will start and run for days until you try to push accelerator. Seems like it is dumping way to much fuel into throttle bottle and keeps fouling plugs. A friend keeps telling me it is prob fuel pump but this doesn't make much sense to me and for $200 it's an expensive guess.
Jul 18, 2009 at 4:44 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Running too rich:

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode
Jul 18, 2009 at 5:53 AM
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