CONTINUED MISSFIRE AFTER FULL TUNE UP AND IGNITION COIL REPLACEMENT

2006 Hyundai Sonata

Tiny

Bernadette

April, 22, 2011 AT 2:09 AM

Have a 2006 hyaundi sonata 6 cylinder that was recently missfireing, did a full tune up and replaced ignition coils after finding water and a silicone type substance in one of the cylinders. Ran great for three weeks, then began to missfire again?

FOUND 1299 RELATED QUESTIONS

Cj7

41 ANSWERS
53 IMAGES

1 Answer

Tiny

rasmataz

April, 22, 2011 AT 8:16 AM

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-

Please login or register to post a reply.

Ignition Coil Replacement Ford Taurus
Ignition Coil System Test Repair - All Cars
Ignition System Test Guide