Just bought the car last week (therefore haven't had time to
clean the engine) and found this interesting climping job:
Does anyone know why they might have done this and what
they, in fact did to what?

Attached Thumbnails

 

__________________
Thanks,
Will

1985 300D- 222k- (bad transmission)
1980 300D- (parts car)
1982 300SD- 242k

Looks like the EGR was disconnected - I think the rest of the group would agree - a good thing on a diesel.
Fred

Forgive me guys,

But first *WHAT TYPE OF CAR* are we talking about?

Secondly, I think from 1981-1993 Mercedes used primary an egr valve in diesels to allow exhaust gases from into the intake at cruiz conditions (1800 rpm to about 2600) to reduce NOX.

Generally, it is regarded as 1) an expensive valve 2) carbon from exhaust does no good for engine 3) may reduce NOX at a sacrifice of other virtues.

Disconnecting: Primary, to avoid attention, people stick a small bearing or "BB" into the rubber tubing on the EGR valve or somewhere in the rubber to the EGR valve. Other's which are experiencing a bad egr valve are forced to put a metal shim where it bolts to the manifold.

Hope that helps!

Michael

__________________
Michael McGuire
83 300d
01 vw A4 TDI
66 Chevy Corsa
68 GMC V6 w/oD
86 300E

By the looks of the vacuum routing on the valve cover, seems like a 1982-1984 300D or SD.

Yes the car is a 300TD, 1982.

My signature should have been updated. Sorry for the confusion.

__________________
Thanks,
Will

1985 300D- 222k- (bad transmission)
1980 300D- (parts car)
1982 300SD- 242k

looks like someone disconnected the EGR and plugged the end with some "stuffing".

__________________
1984 300D Turbo - 231k....totalled 11/30/07 RIP

Looks more like it was cauterized with very hot pliers.

Sixto
91 300SE
87 300SDL
83 300SD

Thanks

__________________
Thanks,
Will

1985 300D- 222k- (bad transmission)
1980 300D- (parts car)
1982 300SD- 242k

EGR- exhaust gas recirculation. It's been used since the late sixties to return some exhaust gases back to the intake to allow them to burn again.Primary benefit is to reduce emissions at the tail pipe.Glad my diesel doesn't have one

__________________
Democracy dies in darkness, you have to kick at the darkness till it bleeds daylight

I think the purpose is to introduce a relatively inert filler to lower combustion temperatures which reduces oxides of nitrogen emissions.

Sixto
91 300SE
87 300SDL
83 300SD