97 4.2 engine missfiring

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Dec 20, 2006 | 03:59 PM

#16

nascar88ford

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Joined: Aug 2005

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No, it is always a different one. The most common is cylinder #3 though...... Could the coil pack be sending out too much power to cause them to crack?

Dec 20, 2006 | 04:15 PM

#17

KingRanchMan02

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From: Louisville, Kentucky

Is it clean and dry in the plug well for the cracked plug?

Dec 20, 2006 | 07:25 PM

#18

projectSHO89

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Joined: Jan 2004

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From: St Louis

Quote:

Originally Posted by nascar88ford

No, it is always a different one. The most common is cylinder #3 though...... Could the coil pack be sending out too much power to cause them to crack?

Coil pack only sends out enough power for the plug to fire, then it stops...

Steve

Dec 21, 2006 | 12:38 AM

#19

nascar88ford

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That is what I thought but just wanted to make sure......And yes, the plug is dry and the same color as the rest of them.... The funny thing is my cousin has the same problem with his 98 F-150....Can't figure it out. The "Service Engine Soon" light has never come on. I thought it was supposed to blink or something when a misfire was occuring. Maybe it has to be continuious. Sorry to take over your thread Two Slow, our problems seem to be somewhat similiar....Thanks for your input guys...
-Matt

Dec 22, 2006 | 12:17 PM

#20

two slow

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I put new plugs and wires on it today. Judging be the plugs that came out of it I don't think that was the problem. I'll take her out for a good dive here in a little while.