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Old 03-04-2017, 05:49 PM   #3
78F350
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Join Date: Jul 2014
Location: Oklahoma
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Quote:
Originally Posted by AZ986S View Post
Could it be the spark plug tube o-rings?
These are the ones I put in a few months ago...
If it was one of the new ones, it would probably be leaking. Take a look. When you pulled the old tubes out is there a chance that an old O-ring or large part of one remained in the engine? That would get chewed up just like what you are seeing.
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