Mazda 323 Workshop Manual Supplement page 159

F2
TROUBLESHOOT1NG GUIDE
25
HIGH OIL CONSUMPTION [BP TURBO]
DESCRIP- 1
l
Oil consumption excessive
TION
l
Exhaust gas white
TROUBLESHOOTING HINTS1
a PCV system malfunctton
*
@ Englne malfunction
(Oil
working
up,
working down,
or leakage)
3 Oil leakage
from turbocharger
ZEP [ INSPECTION
Repair or
replace 1
Check if PCV hose, ventilation hose or their at-
taching nipples are separated, damaged,
ciogged, or restricted
2
Check insrde
of air hose, air
pipe,
and
intercool-
er for excesstve oil
3 1 Check white exhaust gas visible when ventilation
1
hose or PCV hose removed
1
4
Remove turbocharger and check at oil seals of
compressor
and
turbine shafi for oil leakage
Yes
NO
Yes
NO
Yes
No Check hoses for clogged
Yes Replace turbocharger
NO
ACTION
Go to next step
Possibly oil working up
Check PCV valve and PCV hose for
clogged
+ If OK, go to next step
e If not UK, repalr or replace
Go to next step
Go to next step
Engine malfunction (Oil working up,
working down, or leakage)
Check foltowing
. Worn piston or cyiinder
l
Worn piston ring groove'
l
Stuck piston rings*
l
Worn vatve seal*
l
Worn
valve stem *
l
Worn vatve guide'
* Refer to 323 Workshop Manual [1203-IO-89F (Europe) or 1204-IO-89F (Australra)].
93GOF2-74:
FZ-42