Daewoo D1146 Maintenance Manual page 110

4.2.3. Diagnostics and troubleshooting
Complaints
1. Oil consumption
excessive
2. Oil pressure too low
3. Oil deteriorates
quickly
Possible causes
Poor oil
Oil seal or packing
leaky
Pistons or piston rings
worn
Cylinder liner worn
Piston rings sticking
Valve guide oil seals or
valve guides, or valve
stem worn
Poor oil
Relief valve sticking
Restrictions in oil pump
strainer
Oil pump gear worn
Oil pump feed pipe
cracked
Oil pump defective
Oil pressure gauge
defective
Various bearings worn
Restriction in oil filter
Gases leaking
Wrong oil used
105
D1146/D1146TI/DE08TIS
MAINTENANCE MANUAL
Corrections
Use suggested oil
Replace
Replace pistons and/or
piston rings
Replace cylinder liner
Replace pistons and/or
piston rings
Replace
Use suggested oil
Replace
Clean strainer
Replace
Replace
Correct or replace
Correct or replace
Replace
Replace filter element
Replace piston rings and
cylinder liner
Use suggested oil
Printed in Jan. 2001 PS-MMA0415-E1A