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1999 Acura Integra Black Smoke on Bumper

Tiny
916GSR916
  • MEMBER
  • 1999 ACURA INTEGRA
Engine Performance problem
1999 Acura Integra 4 cyl Front Wheel Drive Manual

I have a 1999 Integra Gsr and have been trying to figure out what cause my back bumper to be so dirty. I've done a compression test already and they all read 170-160, which is still good. Also, the smoke is really noticable when engaged in vtec and high rpms. When in high rpms and I step on the clutch, cloud of smoke soots out exhuast. Since I had this car I have not beaten on it hard at all. No upgrades or modification to the motor. Other than those things she runs great. Please help

Symtoms:
Brand new spark plugs will turn black
Lost of Oil or burning oil

Things Replaced:
Thermalstat
PCV valve
valve cover gasket
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Monday, April 13th, 2009 AT 3:11 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi 916Gsr916,

Sooty plugs means the engine is running rich and possible causes are :
1. Engine Coolant Temperature Sensor.
2. Injector.
3. MAP sensor.
4. Throttle position sensor.
5. Air filter.
6. Ignition timing.
7. Weak sparks. Could be ignition coil.
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Monday, April 13th, 2009 AT 8:42 AM

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