Compression loss
PARTIALLY BURNED VALVE
Lead deposits may prevent the valve from closing completely. When there is no longer contact between the valves and the
valve seats, there is no heat transfer between the valve and the valve seats, consequently the exhaust valves are no longer
cooled down. These exhaust gasses can burn away the exhaust valve.
•
Check valve and replace if necessary
•
Remachine/lap the valve seats as required, i.a.w. the maintenance manuals.
PISTON PROBLEM
A cracked or pitted piston and/or damaged piston rings can also result in compression loss. This can increase blow-by gasses in
the crankcase and result in oil being pushed into to the oil/air separator, and leaks.
•
Check pistons, piston rings and cylinder
If you have been through all of the above steps and still cannot identify the issue, contact your ULPower dealer .
