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1997 Chevy Truck Engine misfiring

Tiny
JLM405
  • MEMBER
  • 1997 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 270,000 MILES
My 1997 chevy p/u k1500 with over 270000 miles started losing power and misfiring to the point where the truck was having trouble going up hills. The usual suspects were replaced ( cap, rotor, plugs, and wires) but the truck continues to misfire. Need expert advise.
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Friday, June 25th, 2010 AT 4:05 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Possibilities: Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard
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Friday, June 25th, 2010 AT 4:06 PM

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