Thread: How do these M112 spark plugs look?
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Old 09-30-2014, 07:16 AM
Hirnbeiss's Avatar
Hirnbeiss Hirnbeiss is offline
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Join Date: Mar 2002
Location: South Florida
Posts: 1,671
Measure the gap. I forget the spec .04"? They look like they've had a few miles - might as well replace before they seize in the threads.
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