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How do these plups look? Worth changing?

This is a discussion on How do these plups look? Worth changing? within the General Help forums, part of the LSx Technical Help Section category; I was planning on doing the plugs on my Formula today. It's an '00 with 77k miles. I had assumed ...

  1. #1
    Senior Member
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    Navy Blue Metallic
    '00 Formy A4

    How do these plugs look? Worth changing?

    I was planning on doing the plugs on my Formula today. It's an '00 with 77k miles. I had assumed they'd be the originals, but when I pulled one of them out, it was a Denso. Stock would be a Delco, correct?

    Here's a few pics of the Denso (left) next to a brand new Delco Iridium:








    Should I change them out, or just leave them in?

    Thanks!
    Last edited by StuntmanMike; 05-28-2008 at 10:44 AM.

  2. #2
    Member 89LX's Avatar
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    Navy
    2000 Z28 M6

    If you went to the trouble to remove and not sure of their history change regardless how they look. IMO.

  3. #3
    the cake is a lie twozs's Avatar
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    black 01 red 73
    01 z28 and 73 z28

    i just did the plugs on my 01 z recently and thought that they would be a delco and lo and behold they were denso also i was surprised . I'm the original owner and brought the car with 3 miles on it so i guess the came from the factory with denso

  4. #4
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    I'd change them. My car came with denso PTJ16R15's.

  5. #5
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    Navy Blue Metallic
    '00 Formy A4

    Wow, that's funny. I figured Delco would be stock.

    Yeah, I figure I might as well change them. I have all the tools out and everything, and it'll give me something to do today.

  6. #6
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    Red
    2001 Trans Am

    Delco. best to stick with the OEM

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