1999 MONTANA RUN BAD

  • Tiny
  • dinkec
  • 1999 Pontiac Montana
  • 6 CYL
  • 2WD
  • automatic

Change intake mainfold gasket and during that changed lifters put every thing back and start engine runs like crap like is missing jumping
changed spark plugs and wires no change

Sunday, January 9th, 2011 AT 11:17 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Engine running rough or misfiring can be cause by the following:

http://www.2carpros.com/articles/engine-misfires-or-runs-rough

1.Defective spark plugs
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Manifold absolute pressure sensor
12.Mass Airflow Sensor
13.Idle air control valve

Note: If it doesn't apply disregard it-

Was this
answer
helpful?
Yes
No
Monday, January 10th, 2011 AT 2:03 AM

Please login or register to post a reply.

Similar Questions