6A3-2
ENGINE MECHANICAL (RHZ ENGINE)
MAINTENANCE
OIL LEVEL CHECK, OIL CHANGE AND OIL
FILTER CHANGE
Refer to “ENGINE” in Section 0B.
ON-VEHICLE SERVICE
COMPRESSION CHECK
1) Cool off engine if it is hot.
2) Disconnect negative cable at battery.
3) Disconnect ECM connector from ECM.
4) Remove all glow plugs referring to “GLOW PLUG” in Section
6E3.
5) Install special tool to glow plug hole.
Special Tool
(A): 09912-57820
(B): 09916-96520
6) Connect negative cable at battery.
7) Disengage clutch (to lighten starting load on engine) for M / T
vehicle.
8) Crank engine and inspect compression pressure.
Compression pressure specification
(at cranking engine (engine speed is 250 rpm or more)):
Minimum: 2.5 MPa (25 kg / cm
2
, 356 psi)
Maximum difference between cylinders:
0.5 MPa (5 kg / cm
2
, 72 psi)
9) Perform above check for each cylinder.
10) If compression in one or more cylinders is low, pour a small
amount of engine oil into the cylinder and recheck compres-
sion.
D
If compression increases, piston, piston rings or cylinder wall
may be worn.
D
If compression stays low, valve may be stuck or seating im-
properly.
D
If compression in adjacent cylinders stays low, cylinder head
gasket may be damaged or cylinder head distorted.
