2005 Suzuki Forenza misfiring

2005 SUZUKI FORENZA
97,000 MILES • 4 CYL • FWD • AUTOMATIC
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JEFFREY.73
  • MEMBER
  • 1 POST
I simply wanted to know why my car is making a slight rumbling/popping noise? It only appears to do it after I have been driving it for atleast 10-15 minutes or longer. My instincts tell me its misfiring because the coil pack/ignition coil is about to go out on it. Is this correct?
Apr 2, 2010 at 12:27 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following:
1.Defective spark plug.
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.
Apr 20, 2010 at 3:37 PM
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