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Thread: 2001 Deville N* Spark plug boots questions

  1. #1
    mikeymorehead is offline Cadillac Owners Member
    Automobile(s): 2001 Deville Base
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    Question 2001 Deville N* Spark plug boots questions

    I am changing the spark plugs and plug boots on my '01 Deville Base. I have a few questions:

    1. Which end do I put the contact spring into?
    2. When I put he contact spring in, do I need to push it through the narrow part of the boot or will it push through on its own?
    3. Do I need to use dielectric grease on the spring ends?

    I haven't been able to find much info concerning this and this is the first time I have been exposed to coil packs and spark plug boots.


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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: 2001 Deville N* Spark plug boots questions

    Plug boots, spring centered internally ........

  4. #3
    mikeymorehead is offline Cadillac Owners Member
    Automobile(s): 2001 Deville Base
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    Thanks Sub. Should I use some kind of lubricant like dielectric grease or silicone spray?

  5. #4
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
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    Re: 2001 Deville N* Spark plug boots questions

    Most new boots already have a dab of dielectric in the lower tips. A judicious smear in the upper 1/4", where the coil cassette tower sticks in, would hurt nothing.

    If you found one or more plugs with some oil on the metal shell or insulator, that's pretty normal - the O-ring seals in the cam cover wells weep over time. Not a problem.


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