I repl all the glow plugs on my 87 300D @ 249k. Well 20k later I got no GP dash light and sure enough #2 and #4 ohmed out at 10,000 (the rest are 1.1).

These were new from the MB dealer, bout 2 yrs ago (not even).

Is this a common problem with cars running good, reputable, 2 tank WVO systems (like frybrid)?

Least its not the #6 plug, maybe I can get these out with the mani in but I doubt it.

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Paul
Benz-less
I need an SDL !

You might consider taking them back and gently complaining; depending on how old they are. Seems you should get more life than that out of German plugs...

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Think Alternative Energy!
300CD '80 (now gone but not forgotten...)

. . . but don't tell them about the WVO conversion.

Glow plugs are something like light bulbs in that some last much longer than you would suspect and some less. For the price of a glowplug, however, I would try expressing a polite "concern" and see what happens. They might at least replace them at cost.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I can't see how fuel type would have anything to do with the glow system. Did you ream the holes when you replaced them? That is said to play a major role in the life of the plugs.

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1989 300E 144K

Just pull the cruise servo to do the plugs. Four 5mm Allen bolts.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

It means everything. If the engine is coking, then the glow plug holes get full of carbon and it will decrease the life of the plugs. Reaming will help.

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1983 123.133 California
- GreaseCar Veg System

Anyone know what size reamer to use?

Before I did the WVO conversion I had it all apart and the intake and valves were very gummed up, coated with black soot. I couldnt clean it all out (how to clean valves?) so I left it.

I didnt ream holes though. The price wasnt too bad from dealer. They like my car so for some reason Im getting wholesale pricing. Think it was like $9 per plug so I guess I dont need to ***** too much. Its just the labor involved. Those dam injector lines are like prison bars when you are trying to reach in. I was praying as I probed #6, thankfully that one ohm;d out at 1.1.

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Paul
Benz-less
I need an SDL !