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1991 Nissan Maxima Nissan Maxima running rough

Tiny
CEODOM
  • MEMBER
  • 1991 NISSAN MAXIMA
  • 6 CYL
  • FWD
  • MANUAL
  • 290,000 MILES
I have a 91 maxima. It started running rough a few weeks ago. I changed plugs and noticed that the #3 plug looked as if it had not fired. All the others had a grayish deposit on them. Could my injectors be bad? It ran rough once before and then it cleared up. Now its running rough again.
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Friday, November 21st, 2008 AT 11:54 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

This well may be a faulty injector, check the input pulse to that injector, and also the lead as well, try some good quality fuel system cleaner as well, start here.

Mark (mhpautos)
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Friday, November 21st, 2008 AT 6:13 PM

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