BMW tool is 18mm Magnetic socket (archive)
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Posted by Rod... on November 05, 2001 at 04:11:51:
In Reply to: Surprising Problem with Spark Plugs... posted by Art on November 04, 2001 at 11:56:31:
(posted from: c812838-a.plstn1.sfba.home.com (24.176.131.44))
I was attempting to do a compression check on the engine yesterday of my M5 and when I attempted to take out the spark plugs I was unable to do so. I could not figure out what size the plugs were. They don't appear to be 13/16, nor are they 5/8. Are they a metric size by any chance? Possibly 16mm? I understand the Bosch replacement plug is an X5DC, can someone advise the proper gap? I have not obtained any tech manuals yet, so I have no reference to check. Thanks in advance.
I purchased the 18mm BMW tool and it works fine.
But, hey if you make something that works, it works.
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