Hi Ken,
The compression is pretty good.. Typically you want the lowest value to be 
within 10% of the others - which you are.

Is it possible the IP timing changed?

Does it do this when warm or only when cold?

My 91 300D 2.5T did something similar - but it was intermittant.  It would 
smoke heavily (white smoke) , have no power and then gradually get better as 
it went putt-putt down the street (very embarassing),  I believe it was 
caused by heavy carbon builld-up because of the POs driving pattern which 
was 5-10 mi /day for 13 years - in New England where there were many cold 
days so I'm sure the engine never warmed up.  I'm sure it was carbon buildup 
and I used some stuff called Ferox (3 bottles) for about 6 months.  My wife 
also drove it 100 mi round trip to work daily at 65mpf which went a long way 
to clearing all problems.  It cleared up and hasn't happened for the last 18 
months.

That's my guess - but your compression is very good.


Larry T (67 MGB, 74 911, 78 240D, 91 300D)
www.youroil.net for Oil Analysis and Weber Parts
Test Results http://members.rennlist.com/oil
PORSCHE POSTERS!  youroil.net
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.
----- Original Message ----- 
From: "Ken Rushing" <[EMAIL PROTECTED]>
To: <Mercedes@okiebenz.com>
Sent: Wednesday, June 27, 2007 10:46 AM
Subject: [MBZ] MBZ 87 300D Turbo smoke/idle problems.


> To review:
>
> Within a couple of days my car began to smoke terrible (thick grey smoke)
> and idle very rough. There is no oil in the coolant or coolant in the oil.
> The radiator hoses are not pressurized when the engine is cold. Also the
> coolant level has not changed and there are no fuel leaks. I've changed 
> the
> plugs, the camshaft timing is good, ran it with fresh diesel
> then ran with diesel injection cleaner. I removed the injectors and viewed
> the spray pattern on each and they look good. EGR valve is not stuck open.
> All ball pins in the prechamber are intact. The exhaust tappets have only
> about 1-2 mm play. I ran a compression test but I'm not sure what the 
> limits
> are. The highest was 460 psi and the lowest was 410 psi. The other four 
> were
> 440-450 psi. Thanks again for all your help.
>
> Ken
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