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#1
04-15-2020, 02:18 AM
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1987 300D OM603 catastrophic failure
Changed the head gasket on the car and it had a catastrophic failure after about 500 miles. Car was running OK prior to the change. It ran very rough one day with an internal sound. After a short while it died and engine seized. I removed the head today and this is what I found. The piston took out the intake valve plus the lifter on cylinder 6. It left a big hole in there as you can see from the picture. I could put the engine back together as I have a spare piston and head. However, I am wondering how this failure mode could happen. I don't want to put it back together and it fails again. Any theories?
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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 1 X 2006 CDI 1 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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