The yata had a stuck engine as in would not turn.
Piston ring quick fix.
The piston rings themselves only cost between 30 to 150 for the parts.
Since the piston rings are inside of your engine this means an auto mechanic will need to remove the engine from your vehicle and disassemble it so they can access the worn out piston rings.
This ensures that the engine maintains a consistent level of compression.
If its a car that car been sitting for a while you can probabaly fix it with out a tear down if its like stuck piston rings.
I had a miata with this problem.
The piston rings fit into horizontal grooves in the pistons.
You will have to buy new plugs.
I drained the oil and filled the engine with a combination of diesel fuel pblaster you can buy by the gallon and atf in about a 1 1 1 ratio.
The rings ride within annular grooves in the piston.
Actually it was much worse.
It depends on the situation.
There are two positions in which the rings can get.
However most of the replacement cost has to do with the labor behind it.
The rings expand against the cylinder wall and seal the combustion chamber.