Daewoo DE12 - Page 39

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Complaint Cause Correction
7) High oil consumption
(1) Oil leaking into
combustion chamber
(2) Oil leaking past cylinder
head
(3) Oil leaks
Clearance between cylinder liner
and piston excessive
Piston rings and ring grooves
worn excessively
Piston rings broken, worn, or sticking
Piston rings gaps set incorrectly
Piston skirt portion broken, worn
excessively
Oil return holes in oil control ring
restricted
Oil ring seated incorrectly
Breather piping restricted
Valve stems and valve guide
loose excessively
Valve stem seals worn
Leaky cylinder head gasket
Applicable parts loosened
Applicable packings worn
Oil seals worn
3
2
1
3
2
1
8
7
6
5
4
3
2
1
Replace
Replace pistons and piston
rings
Replace piston rings
Correct
Replace pistons
Replace piston rings
Replace piston rings
Clean or replace
Replace as complete set
Replace seals
Replace gasket
Replace or repair gasket
Replace packings
Replace oil seals