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No power and missing on 3 cylinders

Tiny
SDUNCAN83
  • MEMBER
  • 2002 LINCOLN LS
  • 113,000 MILES
When accelerating, there is absolutely no power at all. Also, when idling and driving, it is missing on cylinders 1-3. I've changed all 6 spark plugs and ignition coils. It almost seems as if the timing is off. I've heard that these cars are known for bad sensors. Should I go ahead and change the camshaft and crankshaft sensors? If not, what else could it be causing the problem?
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Monday, October 14th, 2013 AT 4:18 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Are you getting a trouble code for either sensor? Have you checked fuel pump pressure and made sure the catalytic converter isn't plugging?
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Monday, October 14th, 2013 AT 6:29 PM
Tiny
SDUNCAN83
  • MEMBER
  • 2 POSTS
No codes are coming up other than the misfire on cylinders 1-3 and the corresponding ignition coils. Exhaust output on drivers side is normal and hot. Passenger side exhaust is light and cold. Theres a strong smell of gas and the car is a little louder than normal. Vacuum leak maybe?
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Monday, October 14th, 2013 AT 6:58 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
If the exhaust in the passenger side is light, that concerns me. Have you checked for an exhaust blockage on that side of the vehicle? Also, have you tried switching coil packs to see if the misfire moves to different cylinders?
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Tuesday, October 15th, 2013 AT 5:24 AM

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