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1999 Mercury Villager 1999 Villager engine misfire

Tiny
JSAID
  • MEMBER
  • 1999 MERCURY VILLAGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 125,000 MILES
Cylinder 1 and 3 does not firing. Engine code is PO300. The dealer said the injectors 1 and 3 are bad. I changed all the injectors on the rear bank (cyl 1, 3 and 5) plus spark plugs, wires, dist cup, rotor etc and also tried with another distributor and the problem continues.
The cylinder 1 and 3 not working, there are good spark and compression but I think the 1 and 3 injectors are not injecting fuel.
Please help
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Wednesday, December 26th, 2007 AT 5:37 PM

5 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Check the pick up coil wire in the distributor.
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Friday, December 28th, 2007 AT 9:58 AM
Tiny
JSAID
  • MEMBER
  • 3 POSTS
I already tried with a brand new distributor, but the problem continues
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Friday, December 28th, 2007 AT 10:36 AM
Tiny
BLACKOP555
  • MECHANIC
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Are the 1 adn 3 injectors working? They should be making a buzzing sound if they are working, if they are not check for pulse at them.
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Friday, December 28th, 2007 AT 11:36 AM
Tiny
JSAID
  • MEMBER
  • 3 POSTS
I don't think that 1 and 3 injectors are working because when I take out the wires from them (when the engine is running) there is no difference, it continues failing.

I cannot hear the clicking sound of 1 and 3 injectors when I use the stetoscope, either.

I have changed everything but the computer. Shall I be considering a flaw in the computer at this stage?

Thank you
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Friday, December 28th, 2007 AT 12:34 PM
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Check for voltage at the injectors. If thers voltage/pulse and the injectors arnt firing then they must be bad.

Before calling it the computer have the crank and cam sensors checked, they tell the pcm when to fire the 1 and 3 sensors also. There may be a loose wire at the pcm.

If its not too much trouble try swaping those injectors with others. If the problem moves with them then replace the injectors.
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Friday, December 28th, 2007 AT 12:46 PM

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