Thread: Compression Tester adapter size ?
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Old 03-21-2012, 10:48 PM   #7
fordfixer
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Join Date: May 2010
Location: Crete, Illinois
Posts: 306
Default Re: Compression Tester adapter size ?
If you can get your hands on the spark plug adaptor for modern 18 mm. plugs, the compression gauge should screw right into it. This is what I use.
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