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Thread: leaking spark plugs

  1. #1
    Speedster Member
    Join Date
    Jan 2013
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    british columbia
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    306

    leaking spark plugs

    I was doing some fine tuning on my flat 6 and checking the spark plugs for leaksge I poured a little water around the plugs (when engine warm) and 3 were bubbling causing a little ripple. To comfirm good contact I used a broom handle about a foot long cut it square and glued a piece of sand paper on it and ground the plug seat until it was clean and smooth on the other end of the handle I glued some fine paper to give it a polish. If you so desire you can plug the hole with a rag and later remove it with tweasers. Also while I was pouring the water on the plugs some spilled on the intake manifold and the engine fluttered and I found the intake manifold nuts were loose. A small thing but a big difference in performance Dave

  2. #2
    President Member
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    Nov 2006
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    Staten Island, New York, USA.
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    Never thought of doing this. An easy diagnostic procedure. Thanks!!!
    1957 Studebaker Champion 2 door. Staten Island, New York.
    The cars that started the madness: My father's 1952 Champion 4 door and neighbor's 51 Champion.

  3. #3
    President Member Commander Eddie's Avatar
    Join Date
    Oct 2010
    Location
    Dundee, Oregon
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    1,182
    Sometime in the past I remember a mechanic telling me that it is a good idea to periodically check bolt tightness on exhaust/intake manifold as well as the carburetor. Since then I have occasionally found these bolts have loosened and needed tightening. I'm not sure if you would ever want to use locktight on these so checking them once per year is a good practice. And yes, if these bolts are loose they can make a difference in how your engine runs.
    Your method of checking for and correcting leaky spark plugs is clever. I may try that some time. Thanks.
    Ed Sallia
    Dundee, OR

    Sol Lucet Omnibus

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