1983 300D

When warmed up I'm hearing a clack, clack, clack at idle & it's rhythmic with the engine. I've adj. the valves & I have the lubro moly comming in the mail. Injectors have approx. 55K on them.

I bled out all the injector lines & seems #3 keeps getting air in it. Yet I don't have any fuel leaking or even seeping.

Any ideas where to look?

Thanks for any help in advance...

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1983 300D 285,000
1948 willys fuel injected, tons, 39.5 PBR's
2000 PSD pumped for pulling..

I replaced the shock on the belt tensioner. No more noise.

Hugh Sr
1984 190d (W201) 99,454

I'll take a look at that in the am. thanks for the reply

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1983 300D 285,000
1948 willys fuel injected, tons, 39.5 PBR's
2000 PSD pumped for pulling..

A 190D and 300D are completely different. An OM617 has tension set by bolts on the AC, alternator and power steering pumps. In the meantime, you've answered your own question

When was the last time you changed your fuel lines? Made sure all the clamps pre-lift pump are tight?

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

I just got the car a few weeks ago, I'll check these also.

If It's picking up air pre-lift pump, why would only #3 have air?

Thanks

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1983 300D 285,000
1948 willys fuel injected, tons, 39.5 PBR's
2000 PSD pumped for pulling..

I rebuilt the lift pump, checked all the fuel lines pre pump. Vented the fuel system. It's still there. Only when warm & only at an idle.

Is it normal for the om617 to have a noise like this at idle?

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1983 300D 285,000
1948 willys fuel injected, tons, 39.5 PBR's
2000 PSD pumped for pulling..

Mine has a slightly different tap/clack when colt and slightly raised idle than the rest of the time. Just noticed it on my father's w210 e300d yesterday... Must be an injector-related thing.

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)