Spark plug question
01-26-2006, 01:29 PM
#1
MBWorld Fanatic!
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Spark plug question
For all of you who know engines better than I do, I have a question. I changed my plugs today and on cylinder #1 I had oil on the threads and sitting down in the area where the plug goes in. There was not any oil on the electrode of the plug, and the rest of the cylinders were dry. It is an '02 coupe with the M111 engine and I was hoping for some insight. Outland? Anyone?
Thanks....
Thanks....
01-26-2006, 11:36 PM
#2
MBWorld Fanatic!
Thread Starter
Well, it appears that my thread was moved out of the W203 forum, so I am going to bump it so it can be seen.
01-27-2006, 12:23 AM
#3
Super Member
Not sure about your engine design but usually its the valve cover seal leaking oil down into the spark plug hole. Overhead cam engines usually have a O-ring type gasket for each spark plug. If it leaks too much it will cause a misfire.
Scott
Scott
01-27-2006, 07:56 PM
#4
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2000 ML 320, 2003 CBR600F4i, 99 Eclipse GSX
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Hit the nail on the head.
Not a do it yourself job, special tool required as they are almost pressed in and out.
Hit the nail on the head.
Not a do it yourself job, special tool required as they are almost pressed in and out.
01-27-2006, 09:17 PM
#6
MBWorld Fanatic!
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Originally Posted by MBTECH2003
Not a do it yourself job, special tool required as they are almost pressed in and out.
Originally Posted by mleskovar
Have you tried tightening the valve cover? Be careful.
