PeachParts Mercedes-Benz Forum - View Single Post - Can Anyone Tell Me How To Check Power On Glowplugs????

MB-Owner-in-ind · #2 12-09-2005, 10:32 PM

Quote:

Originally Posted by calimercedes

I Have No Start On My 300sdl.. Its Crancking Over But No Start..im Thinking It Might Be The Glow Plug Relay, Not Warming Up The Plugs.. How Can I Check To See If I Have Power On My Plugs? Would A Regular Test Light Do The Job? Thanks..

I think the SDL is turbo and uses pencil type plugs. Let me know if I am wrong. You would hook the positive lead of a VOM to the plug wire and the negative lead to ground. If you have a 12v test light just hook one side to plug wire and other side to ground. This will tell you if you have power. Using the ohm feature and setting it to the lowest value you can pull the block off of the relay and test the plugs themselves. Be sure the wires are still connected to the plugs and test each spot opposite of where the wires come in. Check for about .6 ohm resistance.