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Old 01-10-2014, 01:09 AM
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Join Date: Jul 2013
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Need some assisstance. Spark plug gaping.

Hi guys. I have been given a 1985 280SE Grey market car. I do believe the plugs have been fouled. i am about to replace the plugs but cannot find the gap needed for my new plugs. I have the M110 Mercedes book but cannot seem to locate the spec. I am sure it is in there somewhere...What is the recommended gap for a bone stock 1985 280SE?
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Old 01-10-2014, 01:14 AM
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I did find some info on an 81 280SE. It said the gap would be .032". Any coorelation there from an 81 to an 85???
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Old 01-10-2014, 07:50 AM
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Location: Southeastern PA
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The Owner's Manual should list the proper spark plug and gap. Best to use only the spark plugs that MB specifies.
Fred Hoelzle

Last edited by Ferdman; 01-11-2014 at 07:01 AM. Reason: Clarification
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Old 01-10-2014, 04:25 PM
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Location: SF Bay Area
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Just curious - what document or label has the spark plug part number but not the gap?

87 300D
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Old 01-10-2014, 10:21 PM
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Yes back then they were all .032, .8mm
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Old 01-11-2014, 05:18 AM
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Join Date: Jul 2013
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thanks for the info. I appreciate it. I just took an old plug out , went to autozone and matched it. So thats how I got the plug.
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