My 1987 300 SDL has trouble starting and blows smoke for a minute. The glow light does not light up. I checked the 4 pin connection, bridged 1-3 and glow light works. I also checked term.30 and 80 amp fuse both had no voltage. After about 20 seconds relay clicks internally. At first I had seen white greyish fine powder at fuse and 4pin connector. Is the problem the pre glow time relay, and can it be repaired, or does it have to be replaced ? 5 years ago the 80 amp fuse blew on a very cold winter day. I had to use a paper clip as a temporary fuse, but installed the correct fuse soon after.

But did you ohm out the glow plugs from the 6 pin plug at the glow controller? Reason being, the light inop is part of the self test and can be indicative of one or more bad plugs.

__________________
Mark
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THE WHITE FLEET
2016 GLE300d 4-MATIC 38K BROWN!
2012 S350 Bluetec==94k WHITE

2007 ML320 CDI==166K WHITE (FOR SALE)

Under new management:
2005 E320 CDI--140K--WHITE
1995 E300-Diesel-133.5K--THE CAR IS BLUE
1986 300SL--97.5K (European) AND WHITE. Back in Europe!
1991 190E 2.3-73K California Perfect.--WHITE
1995 E320-Wagon-159K--WHITE (recently scrapped)
1987 300D Turbo-213K--WHITE
1987 190D 2.5 Turbo-288K--WHITE

I hope you cleaned out all of the powder, as that is corrosion, and it will impede current flow...

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D