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CLA250 Spark Plug Replacement (DIY Definitive Guide)

This is a discussion on CLA250 Spark Plug Replacement (DIY Definitive Guide) within the CLA Modifications / DIY forums, part of the Mercedes-Benz CLA Forum category; Always have though high energy e connections should be dry but then these conductive compounds show up and not only make connect and disconnect easier ...

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Thread: CLA250 Spark Plug Replacement (DIY Definitive Guide)

  1. #51
    jmc
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    Always have though high energy e connections should be dry but then these conductive compounds show up and not only make connect and disconnect easier they are supposed to enhance those critical contacts but of course if the compound flows at temp then ... oops
    The nonconductive stuff is just to relief the boot friction for easier mount and dismount and seal out moisture ... which makes sense
    My compromise would be a tiny tiny tiny smear of conductive on the spark plug contact and a small bit of nonconductive around the boot lip ... get dual benefits

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    The Deoxit grease is rated up to 250 Celsius (I think that is 550 Fahrenheit) .. that is comparable to the Permatex, and Versachem Dielectrics.
    Too late for the Benz ( I am not taking it apart again! ) , but I have a couple of Hyundai Sonatas due (my kids cars) , will try the Deoxit on those.

    I thought you were not supposed to put grease on the rubber boot. it would certainly smear all over the plug
    I am reading that we are not supposed to get greasy fingerprints on the porcelain part of the plug.

    I would be curious to learn more about the OEM dielectric grease, if someone has some, or has some info
    on this please post.

    I will let you guys know how well my DeoxIt experiment works out.

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    Re: grease ... yeah two schools of thought
    I know dry/dry works and thats a baseline and may just stick with that (... if it aint broke ...)

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  • #54
    jmc
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    was watching a timing chain video ... and came across a couple frames which shed some more light on the intake removal thing (well at least according to the germans)
    what's left dangling hints at how they prefer to execute the move

    Name:  IntakeRemoval1.jpg
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    Name:  IntakeRemoval2.jpg
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