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Engine

Tiny
TPRXDARKSLAYER
  • MEMBER
  • 1995 FORD THUNDERBIRD
  • V8
  • 2WD
  • AUTOMATIC
I have a 95 ford thunderbird v8 4.6

on the driverside of the motor its putting a black dust on my new plugs and on the passager side is fine. It runs fine on the freeway but when it is in town and alot of stop and go it shacks and shimmies also gives off a rich gas smell and doesnt have a continues stream of exhaust air. All spark plugs are new best auto lites new coils and wires just need to know whats making my car burn rich on that one side and how to stop it also I was getting 120 miles half tank now im down to 130 1/4 tank. And no lights have came on
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Tuesday, August 2nd, 2011 AT 1:00 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
It could be a few things. Are all the plugs getting this dust on the driver's side? Probable causes of an engine running rich are as follows:

1. Excessive fuel pressure can be cause by restricted fuel return line
2. Defective Oxygen Sensors.
3. Leaking injectors and fuel pressure regulator.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.
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Tuesday, October 4th, 2011 AT 3:55 AM
Tiny
TPRXDARKSLAYER
  • MEMBER
  • 2 POSTS
Yes its a black dust on the driver side plugs I fixed half the problem it was ffuel reg and mass air flow o2 needs to be changed now and thats all I can think of
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Tuesday, October 4th, 2011 AT 5:15 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Aren't cars wonderful. Let me know if you have other questions.
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Tuesday, October 4th, 2011 AT 5:31 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Just to add to this one what brand of wires did you get?Also this black dust is where the wires meet the plugs?How long ago did you change the wires?From my expernice if the wires are leaving that black dust thats carbon and can lead to carbin tracking on the plugs. The carbon is conductive and can cause the spark to travel down the side of plug sometimes instead of just down the middle of the plug. So it can cause missfires etc.
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Tuesday, October 4th, 2011 AT 5:40 PM

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