Running lean

2001 NISSAN MAXIMA
144,000 MILES • 3.0L • 6 CYL • FWD • MANUAL
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BEN95
  • MEMBER
  • 3 POSTS
My 02 sensors are not reading causing my car to run lean. What could it be.
Feb 2, 2016 at 2:36 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check fuel pressure with a gauge autoparts rent it.
Feb 2, 2016 at 4:08 AM
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BEN95
  • MEMBER
  • 3 POSTS
And it also seems likes its misfiring at idle
Feb 2, 2016 at 4:23 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check for a vacuum leak as well then have it scanned for codes.
Feb 2, 2016 at 4:27 AM
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BEN95
  • MEMBER
  • 3 POSTS
I scanned it and no codes come up. But it does sound like a slight air leak coming from the backside of the plastic upper intake. But sprayed with brake clean and no difference in idle
Feb 2, 2016 at 4:29 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
do what I said in both replies
Feb 2, 2016 at 4:32 AM
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