My lovely #4 daughter is home from college with my 82 300cd and I spent yesterday afternoon catching up on routine maintenance. Changed the oil (found the pan severely dented and grilled her on what she had been driving over...turned out to be a massive chuckhole taken oddly, she said), fixed a loose windshiled wiper clutch bolt, removed the sagging hood pad, and attempted to remove and test all glow plugs.

Upon attempt to remove the hard lines I found one of the lines fused to the end that screws onto the injection pump and so tightened them back down and sat back to figure what to do next.

After looking at the glow plugs more closely I noticed one was rusty on the base and decided it must not be a bosch and decided it was more likely than any others to be bad. Fortunately it was the only one that I felt I could get out with the hard lines on too, #1. So I removed it and it was bad.

I replaced it with a new bosch that I luckily had in stock.

I wanted to replace the primary filter but had none in stock and plan that for today.

I drover the CD around a bit and remain very satisfied with the performance with the four speed.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I'm doing the same with my daughter's car. I replaced all five glow plugs some time ago but did not remove any hard lines to do this.

Surely it took longer, but you don't absolutely have to remove the hard lines to replace the glow plugs. Deep well socket, universal, ratcheting box end might have been employed - but relatively typical tools.

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83 300d - 390k