volvo 1995 850 valve or ring problem, smoking sometime on 1995 Volvo 850

Ring or valve repair cost

Asked by for the 1995 Volvo 850
2 answers
Check the flame trap box for any restriction first before tearing into the valve stem seals or piston rings. The best way to check if it's restricted is to have the engine run and pull out the engine oil dipstick and see if there are puffs of smoke coming out like a chimmy stack. If so then try a flame trap box first. Also is this a turbocharged 850?
rings could be as high as 2-3 thousand or more.
if this is the case, consider replacing the motor.