1994 Jaguar Vanden Plas Smokes black and spark bulbs smell

Tiny
ALARMONT
  • MEMBER
  • 1994 JAGUAR VANDEN PLAS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 14,000 MILES
Hi, I am having problems with my Jaguar 1994 V6, some months ago I changed the air filter and the car started smoking very black (it was having the problem before, but got bigger after I changed filter) so, some day did not started and I did change all the spark bulbs, the car turned on, (but smoking yet), so I let the car for one more week at the garage, I went again to turn it on and it did not start, so I sew the sparks and the almost new ones were black again, which could be the problem and the possible solution? Sensors, tune up?
thank you!
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Sunday, December 28th, 2008 AT 3:30 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The air/fuel mix is on the rich side see below

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
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Sunday, December 28th, 2008 AT 3:36 PM

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