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  #1  
Old 06-10-2006, 06:45 PM
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need some fast help, Doing valve adjustment!!

i am in the middle of my valve adjustment on my 240D. i just took the valve cover off, and found something interesting. the cam lobes are clean, and with that i mean there is no black oil on them. they almost seem dry, with only a super minute layer on them, but it seems dry.

yesterday i changed the oil to Rotella Syn 5W 40, and i drove it about 5 miles. so would this explain the clean cams. i mean they look dry. i have a pic below, should i be concerned?

also while i was under the car, i took a picture of my linkages? i have a 4 speed, and when i shift i hear a light metal clinging, like there is some loose gap when somewhere when i am shifting.

took pics of the linkages underneath, there is a large gap between where i am pointing, kind seems like there is supposed to be some rubber grommit in there to keep it from being loose. can someone help me ID some parts?

thanks everyone

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need some fast help, Doing valve adjustment!!-53400246.jpg   need some fast help, Doing valve adjustment!!-53400247.jpg   need some fast help, Doing valve adjustment!!-53400248.jpg   need some fast help, Doing valve adjustment!!-53400249.jpg   need some fast help, Doing valve adjustment!!-53400250.jpg  

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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
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  #2  
Old 06-10-2006, 06:46 PM
arcticathlon's Avatar
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here is me pushing up and then letting it fall.
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need some fast help, Doing valve adjustment!!-53400251.jpg   need some fast help, Doing valve adjustment!!-53400252.jpg  
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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #3  
Old 06-10-2006, 06:54 PM
ForcedInduction
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Looks like you need new shift bushings.

I'd be worried about the cam. It almost looks like there is rust on starting to form on the lobes. It might get a little messy, but I think you should run it for a few seconds with the valvecover off to see if there is oil coming out the rail.
It should look like this:
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  #4  
Old 06-10-2006, 07:15 PM
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i mean can it be that clean because i just changed the oil (ie not black yet), and i did not turn it on in the last 18 hours?

there seemed to be a very very small film of oil on it.
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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #5  
Old 06-10-2006, 07:15 PM
carson356
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Quote:
Originally Posted by ForcedInduction
Looks like you need new shift bushings.

I'd be worried about the cam. It almost looks like there is rust on starting to form on the lobes. It might get a little messy, but I think you should run it for a few seconds with the valvecover off to see if there is oil coming out the rail.
It should look like this:
don't run it with the cover off, just cranking it will build enough pressure to see if the oil is flowing, be sure to appy vacuum to the shut off valve, or have some one hold the stop lever

Last edited by carson356; 06-10-2006 at 08:06 PM.
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  #6  
Old 06-10-2006, 07:22 PM
ForcedInduction
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Quote:
Originally Posted by arcticathlon
i mean can it be that clean because i just changed the oil (ie not black yet), and i did not turn it on in the last 18 hours?

there seemed to be a very very small film of oil on it.
There is more than enough oil in the oil cooler (If you have one) to turn the oil black within the first few miles.
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  #7  
Old 06-10-2006, 09:20 PM
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Oil drains. I see nothing wrong with a clean cam, and shiny lobes. However, clean as they may be, they are not shiny....looks like rust as ForcedInduction mentioned. Does the surface feel smooth? Smooth or smoother than glass? It should.
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  #8  
Old 06-10-2006, 11:38 PM
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it does feel super smooth, i think i will do the valve adjustment, put everything together, run the engine for 1 minute and then take the valve cover off and check it out. that way i can see if everything is lubed up. now the valve cover had oil in it, with that i mean it was oiled up totally on the inside. so that might have just been a fluke.
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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #9  
Old 06-11-2006, 03:19 AM
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Did the car sit unused for a long time at some point in its recent history?...

That might explain the spots that appear to be rust on the cam lobes.



I think your idea of running it for a couple of minutes and then pulling the cover again to be sure is a good idea.

However, if it was running fine beforehand, then I don't think you have much to worry about.

Mike
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  #10  
Old 06-11-2006, 07:18 AM
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Quote:
However, if it was running fine beforehand, then I don't think you have much to worry about.
That is about where I am with this one. If that cam had been running without oil then you would see real damage to the surface of the lube.
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  #11  
Old 06-11-2006, 07:52 AM
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I assume the 240D is the same way, but on my 300SD I can remove the oil filler cap while the engine is running and see oil being squirted on the camshaft from the spray bar. It's more of a 'stream' than a 'squirt'
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  #12  
Old 06-11-2006, 09:34 AM
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Quote:
I assume the 240D is the same way, but on my 300SD I can remove the oil filler cap while the engine is running and see oil being squirted on the camshaft from the spray bar. It's more of a 'stream' than a 'squirt'
you are totally right, gosh i cant believe i forgot. days before i did the oil change i gave the car more oil and forgot to put the cap back on. i started the car and by the time i made it to the engine oil was being thrown every where. also when i check for blowby there is oil flying around.
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Grey '91 350SDL 214k Dad's car
Beige '81 240D 4 Speed 254k SOLD
Blue '82 300D 225k SOLD
White '95 E300D 46k SOLD
Blue '87 190D 2.5 Turbo 315k SOLD
Brown '80 240D 4 Speed 716k SOLD
Beige '80 300D N/A 119k SOLD
Blue '85 300D Model 186k T-Boned
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  #13  
Old 06-11-2006, 02:27 PM
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Blowby question...

Quote:
Originally Posted by arcticathlon
... also when i check for blowby there is oil flying around.
Please don't let me kidnap this thread, but as a newbie I'm curious how to check for blowby... I understand that excessive blowby is a sign of an engine getting 'tired' but how do you decide it's more than a norm, oil consumption?!

On mine, I get some oil from under the oilcap (even though I've flipped over the oil cap seal) - is that typically caused by blowby as well?!
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  #14  
Old 06-11-2006, 04:59 PM
ForcedInduction
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Quote:
Originally Posted by MercFan
On mine, I get some oil from under the oilcap (even though I've flipped over the oil cap seal) - is that typically caused by blowby as well?!
When you add oil, do not turn the cap over. Oil will run around the seal and come back out when you put it back on.

A bit of wheel bearing grease on the seal will also stop any oil getting past the cap.
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  #15  
Old 06-11-2006, 05:20 PM
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Quote:
Originally Posted by ForcedInduction
When you add oil, do not turn the cap over. Oil will run around the seal and come back out when you put it back on.

A bit of wheel bearing grease on the seal will also stop any oil getting past the cap.
On 617 engines with the metal oil caps, I actually put TWO seals on it, and it helps keep it sealed for a longer period of time. Eventually they harden and it leaks anyway... but they are inexpensive to replace. The down side is that it makes it a little harder to get the cap off and on.

I haven't tried it with the plastic caps... I don't know if it will work on those or not.

Mike

__________________
_____
1979 300 SD
350,000 miles
_____
1982 300D-gone---sold to a buddy
_____
1985 300TD
270,000 miles
_____
1994 E320
not my favorite, but the wife wanted it

www.myspace.com/mikemover
www.myspace.com/openskystudio
www.myspace.com/speedxband
www.myspace.com/openskyseparators
www.myspace.com/doubledrivemusic
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