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1999 Mitsubishi Cylinder 1 is misfiring.

Tiny
DIEGOWINE
  • MEMBER
  • 1999 MITSUBISHI
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 204,000 MILES
I have a 1999 Mitsubishi Eclipse RS with the 2.0 non-turbo DOHC engine. My check engine light came on and I put a code reader on my car. The code that came up was the cylinder 1 is misfiring. I replaced the ignition coil, spark plugs and spark plug wires. I am baffled. What could be causing it to misfire? Could you guys give me some poiters and tell me some things to check.
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Tuesday, December 4th, 2007 AT 1:30 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,
Can you actually feel a miss fire? If so, apart from what you have done.
Check compression and check injection pulse next, it may also be a faulty injector.

Mark (mhpautos)
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Tuesday, December 4th, 2007 AT 3:52 PM
Tiny
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How do I check the injector without pulling out the injector?
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Tuesday, December 4th, 2007 AT 5:06 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Quick way is to touch with finger while running you will feel the injector click. Or plug in a noid light to the electrical connector and watch for pulse. But you will have to pull the injector to see if the actual spray patten is ok. This should be done on a injector tester.

Mark (mhpautos)
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Tuesday, December 4th, 2007 AT 8:12 PM

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