Here are some links to help you.

Note:
If the starter does not crank fast enough, your engine will never start.

Starter health is important to your diesel!!!
http://www.peachparts.com/shopforum/showthread.php?p=739798



Never Touch Hot Diesel Glow Plugs!!!
http://www.peachparts.com/shopforum/showthread.php?p=986836

glow plug reamer - pic
http://www.peachparts.com/shopforum/showthread.php?p=481681

How Necessary To Ream Glowplug Hole?
http://www.peachparts.com/shopforum/showthread.php?p=1320545

Questions on a W210 OM 606 glow plug reamer
http://www.peachparts.com/shopforum/showthread.php?p=813864

How do you ream glow plug hole?
http://www.peachparts.com/shopforum/showthread.php?p=1046694

Glow plug stumper of the week
http://www.peachparts.com/shopforum/showthread.php?p=1102855

Why would my GP's die so soon (Bosch)?
http://www.peachparts.com/shopforum/showthread.php?p=1349663

Glow Plug Testing?
http://www.peachparts.com/shopforum/showthread.php?p=717956

Don't need glow plugs
http://www.peachparts.com/shopforum/showthread.php?p=1015005

sd glow plug removal- tips?
http://www.peachparts.com/shopforum/showthread.php?p=819117

:EEK: It is coming AGAIN
http://www.peachparts.com/shopforum/showthread.php?p=951757

Complain; complain; complain!!!!!
http://www.peachparts.com/shopforum/showthread.php?p=536457

Rough Idle When Cold
http://www.peachparts.com/shopforum/showthread.php?p=843069

I want my car Back!!!
http://www.peachparts.com/shopforum/showthread.php?p=841497

No Start =-(
http://www.peachparts.com/shopforum/showthread.php?p=828185

Glow Plug Light wont come on..
http://www.peachparts.com/shopforum/showthread.php?p=780240

The real test today.... only 7 degrees right now
http://www.peachparts.com/shopforum/showthread.php?p=774372

Testing Glow Plugs
http://www.peachparts.com/shopforum/showthread.php?p=755826

Another "not-starting" thread...
http://www.peachparts.com/shopforum/showthread.php?p=756705

How should you prepare your car for WINTER DRIVING ?
http://www.peachparts.com/shopforum/showthread.php?p=711380

Starting up in colder weather
http://www.peachparts.com/shopforum/showthread.php?p=738751

How cold till you use the block heater ?
http://www.peachparts.com/shopforum/showthread.php?p=714351

Whassup with these new glow plugs
http://www.peachparts.com/shopforum/showthread.php?p=566711

Glowplug life?
http://www.peachparts.com/shopforum/showthread.php?p=566237

glow plug removel problem 1995 E300D
http://www.peachparts.com/shopforum/showthread.php?t=152503

99 E300 Turbodiesel Glow Plug Help. Urgent
http://www.peachparts.com/shopforum/showthread.php?p=776430

E300TD glow plug stuck/broken
http://www.peachparts.com/shopforum/showthread.php?p=756613

95 E300D glow plugs - broke one...now what
http://www.peachparts.com/shopforum/showthread.php?p=1190392

prechamber ball fell off
http://www.peachparts.com/shopforum/showthread.php?p=715883


Testing old style glow plugs, Help Please!
http://www.peachparts.com/shopforum/showthread.php?p=732496

Glow plug testing.
http://www.peachparts.com/shopforum/showthread.php?t=104547&page=1&pp=15

Symptom of 1 or 2 bad glowplugs...
http://www.peachparts.com/shopforum/showthread.php?t=141112

Don't always trust your glow plug indicator light!
http://www.peachparts.com/shopforum/showthread.php?t=138347

Glow Plug Relay
http://www.peachparts.com/shopforum/showthread.php?t=122826

Replacing Glow Plugs
http://mbdieseldiy.tripod.com/glowplugs.htm

glow plug conversion kit thread links
http://www.peachparts.com/shopforum/showthread.php?p=1155675

Note: the following link is for a W115
Glow plug timer relay location
http://www.peachparts.com/shopforum/showthread.php?t=138922