BenzWorld Junior Member
Date registered: Jun 2011
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Testing Glow plugs?
My wife's 1976 240d has been reluctant to start on these colder mornings.
I pulled one of the glowplugs hoping that I could test it and all I managed to do was to create lots of sparks.
On other cars I have just touched the body of the glow plug to the negative terminal and run a lead from the positive to the threaded end.
What am I doing wrong?
Also, how long should it take to glow?
I have attached a picture showing the type of glow plug that I have.