that‘s the cylinder that got pulled due to the burnt valve. I wonder how this chaffing can occur. Could it be that a piston ring got so mucked up that it didn‘t move anymore and started abrasing the cylinder wall?
Could this also be the reason for the burnt valve?
ok, that sounds better then. I would have been astonished if they had, knowing them.
Hopefully they will find out what the matter is. I recently had start up trouble which eventually took over 6 months to fully diagnose and fix. Not MFGZ though.
I´d be interested to see the piston. Usually the trouble starts with piston seizure and aluminium gets smeared over the piston rings which get stuck in their grooves consequently. All that drama starts with overheating or oil starvation mostly.Vic
That‘s the piston
How is the cylinder wall lubricated?
You mean the conrod has a hole in the big end from which an oil spray lubes the cylinder wall?
That could be due to shifted bearing shells, or a blocked oil gallery hole in the crankshaft.
I did know the bit about shells slipping – a fairly common thing apparently. However, would a cylinder change trigger a slippage of the shells? You would not loosen the conrod bolts when doing that.
Placido’s engine is same as mine: IO540-C4D5D.
They still couldn‘t find the issue with the high egt. They think it could be related to the camshaft. Does this make sense?