Check engine light on

2004 SUZUKI VITARA
80,000 MILES • 6 CYL • 2WD
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NORA ALLEN
  • MEMBER
  • 1 POST
Check engine light on showing misfire on six. Replaced all plugs check engine light still on.
Jun 26, 2018 at 5:43 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good morning.

Besides plugs other possibilities are:

1. Low compression.

2. Vacuum leak at the intake manifold.

3. Coil or wiring at the coil.

4. Clogged injector. do not use additives in the fuel as they have no effect.

5. Quad driver in the PCM not commanding the injector to fire.

Roy
Jun 26, 2018 at 5:59 AM
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