Call it stupidity, call it masochism, but yesterday I decided to get myself a 20 year old MB with 206,000 miles on it. OK, it's a diesel, thus should run forever ... but wait, it's a rod-bender, thus probably will not run forever.
Good: does not smoke; decent condition (need a new grill and driver seat needs to be redone); cold AC; runs very smoothly.
not so good: leaks more diesel than it uses - will be replacing all of the old rubber lines; tranny jerks when shifting (mostly from park to drive); don't feel turbo boost at all.
So, maybe someone can help me:
1) According to the data card, block should be 603970 12 004137 - but I cannot find that number anywhere on the block - where should it be?
2) Heads are 603 016 17 01 (i.e. original to 1991)
3) Switch over valve's vacuum lines are completely disconnected - I don't even know where these wires should go to. Based on a diagram I saw, one of them should do to ALDA, but I cannot figure out where on ALDA it should connect to. Any diagrams? Photos?
4) one of the sensors on the thermostat housing had broken/disconnected wires (fixed)
5) I have read that wastegate should be cleaned (or at least I thought I read that). General question, what areas need to be cleaned (i.e. what parts of the motor/turbo collect deposits which I need to clean out)?
6) What should be the boost pressure for the turbo? What should be the vacuum pressure at idle?
7) how do I know if I need new glow plugs?
8) The interior smells like diesel (since it was leaking the the engine bay for a very long time) and it also has the 'musky' smell of an old car - What should I do/use to bring back that nice clean smell of a new car?
9) Should I change any of the gaskets (as a preemptive action, even though they might now leak right now)? If so, which ones?
10) Turbo does not seem to work - what should I check/fix/repair...?
11) Does anyone have a year by year summary as to what has been changed (external, internal, engine, drive train, etc.)?
... any specific maintenance service I MUST do asap?
Some current scans: 1991 MB 350SD pictures by sxc505 - Photobucket
Thanks in advance for all your help,
Vlad
Good: does not smoke; decent condition (need a new grill and driver seat needs to be redone); cold AC; runs very smoothly.
not so good: leaks more diesel than it uses - will be replacing all of the old rubber lines; tranny jerks when shifting (mostly from park to drive); don't feel turbo boost at all.
So, maybe someone can help me:
1) According to the data card, block should be 603970 12 004137 - but I cannot find that number anywhere on the block - where should it be?
2) Heads are 603 016 17 01 (i.e. original to 1991)
3) Switch over valve's vacuum lines are completely disconnected - I don't even know where these wires should go to. Based on a diagram I saw, one of them should do to ALDA, but I cannot figure out where on ALDA it should connect to. Any diagrams? Photos?
4) one of the sensors on the thermostat housing had broken/disconnected wires (fixed)
5) I have read that wastegate should be cleaned (or at least I thought I read that). General question, what areas need to be cleaned (i.e. what parts of the motor/turbo collect deposits which I need to clean out)?
6) What should be the boost pressure for the turbo? What should be the vacuum pressure at idle?
7) how do I know if I need new glow plugs?
8) The interior smells like diesel (since it was leaking the the engine bay for a very long time) and it also has the 'musky' smell of an old car - What should I do/use to bring back that nice clean smell of a new car?
9) Should I change any of the gaskets (as a preemptive action, even though they might now leak right now)? If so, which ones?
10) Turbo does not seem to work - what should I check/fix/repair...?
11) Does anyone have a year by year summary as to what has been changed (external, internal, engine, drive train, etc.)?
... any specific maintenance service I MUST do asap?
Some current scans: 1991 MB 350SD pictures by sxc505 - Photobucket
Thanks in advance for all your help,
Vlad