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  #1  
Old 07-29-2012, 01:44 PM
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Question HELP! Engine died on the 300SDL. Hard to turn by hand now.

Wife was driving on the freeway and then she said she heard loud engine noise and losing power. Pulled to the hard shoulder. Went to rescue her and the car started but shake at idle. Tried to drive it home and then engine stalled and would not start again. Long story short, the car is now kaput.

Tried to do a compression test today but engine turned over very slowly with injectors ALL removed. Timing chain intact. I tried to turn by hand at the crank bolt but it is very hard. What can stop the engine from turning? What could be in the way, broken vacuum pump or others? I tied the shut off valve to 'shut off' position to stop fuel from squirting out but it should not matter.

Your input is appreciated.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #2  
Old 07-29-2012, 01:56 PM
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Oil level? I'd suspect vacuum pump failure or low oil/oil pressure causing bearing failure/seizing.
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  #3  
Old 07-29-2012, 02:03 PM
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Quote:
Originally Posted by ah-kay View Post
Wife was driving on the freeway and then she said she heard loud engine noise and losing power. Pulled to the hard shoulder. Went to rescue her and the car started but shake at idle. Tried to drive it home and then engine stalled and would not start again. Long story short, the car is now kaput.

Tried to do a compression test today but engine turned over very slowly with injectors ALL removed. Timing chain intact. I tried to turn by hand at the crank bolt but it is very hard. What can stop the engine from turning? What could be in the way, broken vacuum pump or others? I tied the shut off valve to 'shut off' position to stop fuel from squirting out but it should not matter.

Your input is appreciated.
When you restarted the engine, did you notice if you had oil pressure? Lack of lubrication will cause an engine to bind up rather quickly . Vacuum pump may have failed which could have caused engine damage. Oil pump may have failed, or cam shaft may have broken. Just guesses........good luck!!
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  #4  
Old 07-29-2012, 02:04 PM
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x2.

Does it have oil? No mention of this yet.

I might not have driven it further.

Did the dash gauge show oil pressure?
Are the fuel filters fresh?
So many questions not answered.
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  #5  
Old 07-29-2012, 02:40 PM
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Oil was changed and just topped up the night before. Check the oil now and it is at the full mark. Valve cover removed aleady to check timing chain. Cam shaft seems to be OK. I am going to remove the VP and check it out.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #6  
Old 07-29-2012, 02:43 PM
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I'd be tempted to pull the oil pan and see if anything is clogging the oil pickup screen....
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  #7  
Old 07-29-2012, 02:52 PM
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I'm sorry to hear about that and also sorry it's not the first time I hear such a story. Yes, pull vacuum pump then side sump.

You might have lost a bit of chain guide hindering chain progress. Stop leaning on the engine until you peak into the sump.



Note, this is Dave/gsxr's engine before he cleans it

Sixto
87 300D^2

Last edited by sixto; 07-29-2012 at 03:51 PM.
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  #8  
Old 07-29-2012, 03:12 PM
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It is not easy to pull the oil pan on the 603. I will pull the VP and side sump and take a look.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #9  
Old 07-29-2012, 04:55 PM
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Best of luck with your exploration. Very curious to hear what you find.

Sixto: Holy crap that is a clean bit of motor there. Is that a view into a fresh rebuild prior to final assembly? So clean !! (Museum display).
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98 E300D *sold
86 300SDL *sold and made flawless 10 hour journey to new home.
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  #10  
Old 07-29-2012, 05:51 PM
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Bad news - Shavings in sump

Remove the Vacuum pump and it seems to be OK. All the ball bearings are there. Open up the side sump and found quite a bit of shaving inside. It seems to be fragments of a thin metal tube. What could it be? What next?
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HELP! Engine died on the 300SDL. Hard to turn by hand now.-img-20120729-00007.jpg  
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #11  
Old 07-29-2012, 05:58 PM
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smoke gets in your eyes
 
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Something from here?



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87 300D^2
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  #12  
Old 07-29-2012, 06:03 PM
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smoke gets in your eyes
 
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Quote:
Originally Posted by ah-kay View Post
Remove the Vacuum pump and it seems to be OK. All the ball bearings are there. Open up the side sump and found quite a bit of shaving inside. It seems to be fragments of a thin metal tube. What could it be? What next?
Could they be rollers from the chain? Are they ferrous?

If you can rock the crank back and forth slightly - can't hurt much at this point - does the oil pump chain move?

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87 300D^2
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  #13  
Old 07-29-2012, 06:14 PM
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Did the engine have oil pressure when you started if after the problem occurred?
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  #14  
Old 07-29-2012, 06:16 PM
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Something from here?



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87 300D^2
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  #15  
Old 07-29-2012, 06:26 PM
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Can you spin the turbo impeller? Maybe the bearing came apart and flushed down the return line.

If you dare and can do so without getting hurt, feel around inside the oil pump pick-up strainer. You shouldn't feel anything more than a mesh.

Sixto
87 300D^2
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