or insufficiently atomized fuel in a combustion chamber? Does it cause damage it it is not resolved.

Yes, it causes damage to the piston top. Looks like someone took a icepick to it.

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DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012

It is caused by a bad spray pattern... so basically insufficiently atomoized fuel (or improperly). It can definitely cause damage. If it comes out as a stream it will act like a torch. It ate through one of my prechambers that way.

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John Robbins
'05 E320 CDI - 240k
'87 300TD - 318k

It'd sure be nice if someone posted audio of nailing vs no nailing.

My car makes different noises at varying engine temps so I don't really know what is normal sounding or not.

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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FACEBOOK: PANZER450

This is what it can do to a piston.

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DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012