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post #1 of 3 (permalink) Old 08-06-11, 06:06 PM Thread Starter
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Question Spark plug wire blow off

I don't know if this is the right place to ask this question but here goes:
I have a 1999 Ford Expedition 4.6l. I just replaced the wires and now have random wires blowing off the plugs. I talked to a former ford mechanic and he said that the 3 ribs on the plug boot can trap air that gets heated up and expands. He suggested that I "burp" the air out of it by inserting something thin alongside the boot as I insert it down into the plug hole. I did this and it moved from cyl. 7 to cyl 8. Now I "burped" cyl 8 and took it for a short test drive and it stayed on. Does this make sense? Is there any other solution. I read someone said to spray silicone down the hole and on the boot. What do yo think? Thanks for any help.

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post #2 of 3 (permalink) Old 08-06-11, 06:21 PM
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Re: Spark plug wire blow off

Silcone Spray, or some Silcone Greese

Good Luck and good repairing Sterling_6
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post #3 of 3 (permalink) Old 08-07-11, 04:17 AM
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Re: Spark plug wire blow off

Sounds right , you are more or less bleeding trapped air out and it seems to have solved your problem .
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