1997 Nissan Truck running bad

1997 NISSAN TRUCK
241,000 MILES • 4 CYL • 4WD • MANUAL
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MILBURNSHERIE
  • MEMBER
  • 1 POST
after a tank of gas it started bobbling. We have changed the fuel filter 2 times. Now we just changed the fuel pump and strainer. Now it is still running really weird and blowing out black smoke. I'm not sure what to do next. Do you have any suggestions??
Jun 4, 2010 at 5:29 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check your fuel pressure if okay could be an injector leaking or the fuel pressure regulator to include a defective coolant temperature sensor/oxygen sensors and excessive fuel pressure.
Jun 4, 2010 at 5:32 PM
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