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  1. 08-04-2022, 09:57 AM #1
    basstron11
    basstron11 is offline
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    Spark Plug Gap for 175 EFI

    I have a 1999 175EFI.....I did read through the common questions on spark plug gaps but still wasn't clear what the gap should be for new plugs....I have BR8HS10 NGK plugs to go in....Thanks in advance...
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  2. leonreno
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    #2 08-04-2022, 10:30 AM
    Need to post your serial number so we can know exactly what motor you have and the spark plug specs. My 2002 Mercury takes BPZ8HS-10 spark plugs at .04” or 1 mm, not sure for you but can be looked up with serial number.
    Mercury 2002 200hp Carbed Saltwater
    OT566776
    2002 Cape Horn 22' Bay
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  3. basstron11
    basstron11 is offline
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    #3 08-04-2022, 01:07 PM
    Yikes...sorry about that....its 0G883648


    Quote Originally Posted by leonreno View Post
    Need to post your serial number so we can know exactly what motor you have and the spark plug specs. My 2002 Mercury takes BPZ8HS-10 spark plugs at .04” or 1 mm, not sure for you but can be looked up with serial number.
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  4. JOE54
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    #4 08-04-2022, 03:26 PM
    0.035
    .................................................. ...the scariest thing in life is the unknown ...................................
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