Trouble Diagnosis of Turbocharger
Preliminary check:
+Check that the engine oil level is between MIN and MAX of
the dipstick. (When the engine oil amount is more than MAX,
the oil flows into the inlet duct through the blow-by gas
passage, and the turbocharger is misjudged failure.)
+Ask the customer if he/she always runs the vehicle in idle
engine speed to cool the oil down after driving.
+Replace the turbocharger assembly when any malfunction is
found after unit inspections specified in the table below.
+If no malfunction is found after the unit inspections, judge that
the turbocharger body has no failure. Check the other parts
again.
Inspection item Inspection resultSymptom (when each inspection item meets each
inspection result)
Oil leakage Smoke NoiseInsufficient
power/
acceleration
failure
Turbine wheelOil leaks.n
nn
Carbon is accumulated.n
jj
Friction with housing.nj
j
Blades are bent or broken.
Compressor wheelInside the air inlet is seriously contaminated
by oil.jj
Friction with housing.njj
Blades are bent or broken.
After checking both turbine and compressor,
inspect rotor shaft end play.There is resistance when the rotor shaft is
rotated by your fingertips.nnj
The rotor shaft sometimes does not rotate
by your fingertips.
There is too much play in the bearing.nnjn
Oil return portCarbon or sludge is accumulated in the
waste oil hole.n
nn
: Large possibility
j: Medium possibility
n: Small possibility
EXHAUST MANIFOLD, TURBOCHARGERYD25DDTi
Inspection (Cont'd)
EM-3044
Refill oil capacity (Approximately):
Unit:!(Imp qt)
Item 2WD * 4WD
Drain and refillWithout oil filter
change5.3 (4-5/8) 4.0 (4-1/4)
With oil filter
change5.6 (4-7/8) 4.3 (4-1/2)
Dry engine (engine overhaul) 6.3 (5-1/2) 5.0 (4-3/4)
* : Including 4WD appearance 2WD models.
CAUTION:
+Be sure to clean drain plug and install with new washer.
Drain plug:
:29-39Nzm (3.0 - 4.0 kg-m, 22 - 29 ft-lb)
+The refill capacity depends on the oil temperature and
drain time. Use these specifications for reference only.
Always use the dipstick to determine when the proper
amount of oil is in the engine.
6. Check oil level as follows.
a. Start engine and check area around drain plug and oil filter
for oil leakage.
b. Run engine for a few minutes, then turn it off. After more than
10 minutes, check oil level.
Changing Oil Filter
SMA158D
SMA155D
SMA159D
ENGINE MAINTENANCEYD25DDTi
Changing Engine Oil (Cont'd)
MA-3013
