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Thread: cylinder 8 plug is gunked up
          
   
   

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  1. 07-04-2007 05:26 PM #1
    bakwoodsthug
    bakwoodsthug is offline CHR Member
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    cylinder 8 plug is gunked up

     



    Dont know the year but its a early 80s sb350 mid to high build in a 87 jeep wrangler. it has a miss on the left bank changed plugs after I bought it and have 200 miles on them and the number 8 cylinder is gunked up and not firing any ideas?
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  3. 07-04-2007 08:57 PM #2
    bakwoodsthug
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    this is a forum to ask questions right?

     



    looking for any info?
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  4. 07-04-2007 09:20 PM #3
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    NTFDAY
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    Oil fouled or?
    Ken Thomas
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  5. 07-04-2007 09:34 PM #4
    bakwoodsthug
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    its smells burnt and it isnt gas.

     



    It is a thick gunk. All the other plugs are clean and firing good
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  6. 07-04-2007 09:41 PM #5
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    NTFDAY
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    There are a number of possibilities, cracked insulator on that plug, cracked or broken ring(s) in that hole, worn valve guides, and/or bad spark plug wire.
    Ken Thomas
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  7. 07-08-2007 02:23 PM #6
    kevinrocks
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    My plug from cyl 8 was oiled something awful. It also smokes, I'm pretty sure my valve seals are gone. here is a picture of mine. Motor is a 267.

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