After is starts it runs rough

Tiny
ROOSTER200
  • MEMBER
  • 1994 JAGUAR XJ6
  • 175,000 MILES
I have a 1994 xj6 Jag. It wouldn't start. I replaced the crankshaft sensor. When it starts it runs rough. If I give gas the engine it slows down. I noticed exhaust fumes comming from the exhaust manifold under the chrome heat shield. This car hav been set Could it be a blown head gasket
Monday, October 24th, 2011 AT 10:41 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
https://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-
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Wednesday, October 26th, 2011 AT 1:21 AM

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