You have to disassemble the entire engine, remove the piston and check the rubber ring around that piston.
There 2 things how remove piston from the rod and how remove oil ring from the piston? 2003 Kia Rio 1.6L
Yes!
The purpose of a piston ring expander is to make it easier remove and install piston rings. Because of the low torque they use, they help to prevent damage to the piston rings.
Burnt, bent, broken valvepiston or ring damage,Burnt, bent, broken valvepiston or ring damage,
maybe ring piston broken
That means the 'O' ring on the 'hammer piston' is broken. You can often remove the top (CAREFULLY, there is a large spring in there) to get the O ring out, -or take the whole thing to a power tool shop.
Do a compression test on each cylinder looking for one that is significantly lower than the others.
Seriously worn piston rings and more than likely a broken oil ring.
bent valve, burnt valve, stuck valve, broken piston ring, cracked piston, cracked head, blown head gasket.
The DNJ ring spec. information, printed on each compression ring (located next to the piston ring gap), is installed facing the top of the piston for both the top (#1) and middle (#2) compression piston ring slots. The oil control ring can be installed just like any other oil control ring in the bottom (#3) piston ring slot.
a piston ring is not calibrated. You just slide the new one in place