1991 Ford Explorer Logo

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Anonymous Posted on Aug 27, 2014

Hey i have a ford explorer which is a 91 spark

Hey i have a ford explorer which is a 91 spark plug

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Anonymous

  • 2 Answers
  • Posted on Sep 02, 2009

SOURCE: spark plug gap ford explorer 4.0 6cylinder

Our 2003 Explorer V6 requires:
0.052 - 0.056" plug gap

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91 taurus idles slow and runs rough when cold

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91 Explorer 6cyl XLT standard is super hard to start, the engine sounds muffled when starting and while running, quickly overheated once it was running, looses power when pressing accelerator.

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Firing Order diagram for 2006 Ford Explorer

Hope this helps. The ignition coil:
  • changes low-voltage pulses from the PCM to high-voltage pulses.
  • fires 2 spark plugs simultaneously.
  • has 3 transformers.
    • One transformer fires the spark plugs for cylinders 1 and 5
    • One transformer fires the spark plugs for cylinders 2 and 6
    • One transformer fires the spark plugs for cylinders 3 and 4
Spark plug wires:
  • carry high-voltage pulses from the ignition coil to the spark plugs.
The spark plugs:
  • change high-voltage pulses to spark at the gap, which ignites the fuel and air mixture.
The firing order is 1-4-2-5-3-6.

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Spark plug gap ford explorer 4.0 6cylinder

Our 2003 Explorer V6 requires:
0.052 - 0.056" plug gap
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Trcuck will not start, cranks but will not start

If it almost starts when you spray into the intake, then it has spark. It sounds like it's time for a fuel pump.
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