how to stop black smoke comin from exhaust pipe?

1999 NISSAN 180SX
300,000 MILES
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MAJID BALOCH
  • MEMBER
  • 1 POST
when i drive the car gives black smoke.The black smoke comes out too much when i put full accleration otherwise its nt much..and it smells also of petrol
Nov 10, 2011 at 10:15 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,990 POSTS
well, you are DEFINATELY running too RICH with FUEL! this canbe caused by MAF sensor or TEMP sensor or something else. is your service/check engine light on?
Nov 10, 2011 at 10:43 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,990 POSTS
you also could have a leaking/bad fuel pressure regulator. it leaks raw fuel into manifold making overfuel condition which would produce black smoke. take off vaccuum hose to regulator and check for wetness/gas in hose.
Nov 10, 2011 at 10:49 PM
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