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300sd preglow timer

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Old 10-04-2009, 08:11 PM
93mbw140's Avatar
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Default 300sd preglow timer

hey new to Mercedes. I have a 93 300 SD.Im aware of problems with this engine but really love this car. My question is about the preglow function. When I turn key to position 2 it takes about 2 to 3 minutes for light to come on and then 2-3 minutes to go off. I have only had this car for summer months. Can someone describe normal operation to me and possible solutions if this is not normal.
 
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Old 10-04-2009, 10:00 PM
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If you have a Harbor Freight store in your area they sell $4 Digital Volt/Ohm meters (Multimeters).
The Diesel Giant web site has a pictoral on how to check your Glow Plugs. The pictorial is for a different model but it works the same for your model.
You would be checking the Resistance of your Glow Plugs.
Unfortunately the Glow Plugs on your Engine sometimes snap off when you try to remove the.
Here is another forum that has a much better do it yourself section.

If the worst should happen:
DRILLING OUT GLOWPLUGS
http://alan.mcreynolds.googlepages.c...-mercedesom606
 

Last edited by ForcedInduction; 11-23-2009 at 01:43 PM.
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