Mechanics

HOW TO STOP BLACK SMOKE COMIN FROM EXHAUST PIPE?

1999 Nissan 180SX • 300,000 miles

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
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Majid baloch
November 11, 2011.



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?

Tiny
Fixitmr
Nov 11, 2011.
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.

Tiny
Fixitmr
Nov 11, 2011.