2005 Suzuki Forenza misfiring

Tiny
JEFFREY.73
  • MEMBER
  • 2005 SUZUKI FORENZA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 97,000 MILES
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?
Friday, April 2nd, 2010 AT 12:27 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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.
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Tuesday, April 20th, 2010 AT 3:37 PM

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