engine MAZDA 232 1990 Suplement Owner's Guide

82 OUTLINE
CAMSHAFT
IDENTlFlCA~lON MARK
/
EXHAUST
IDENTlFlCATlON MARK
INTAKE
IN
EX BP TURBO
BP26
8P26 BP NON-TURBO
BP05
BP06
TDC
EXHAUST OPEN
The camshaft valve timing specifications are different to improve engine power.

D
D
SUPPLEMENTAL SERVICE iNFORMATION, COMPRESSION 82
SUPPLEMENTAL SERVICE INFORMATION
The following points in this section are changed in comparison with Workshop Manual [Europe (7 203~IO-899,
Australia (I 204-1 U-89F) 1.
Compression
l Inspection
Engine
l Removal
l Engine stand mounting
l Engine stand dismounting
l Ins:attaIion 93GQ32-77 I
COMPRESStON
If the engine exhibits low power, poor fuel economy, or poor idle, check the following:
1. Ignition system (Refer to Section G.)
2. Compression
3. Fuel system (Refer to Section F3.)
93G032-774 93GO32-712
1NSPECTION
1. Verify that the battery is fully charged. Recharge it if
necessary.
2. Warm up the engine to normal operating temperature.
3. Turn the engine OFF.
4. Remove all of the spark plugs.
5. Disconnect the ignition coil connector.
6. Connect a compression gauge to the No.7 spark plug hole.
7. Fully depress the accelerator pedal and crank the engine.
8. Record the maximum gauge reading.
9. Check each cylinder in the same manner.
Compression:
1,059 kPa (IO.8 kg/cm2, 154 psi)-300 rpm
Minimum:
785 kPa (8-O kg/cm2, 114 psi)-300 t-pm
Allowable difference between cylinders:
196 kPa (2.0 kglcm2, 28 psi) max.
IO. If the compression in one or more cylinders is low, pour a
small amount of engine oil into the cylinder and recheck
the compression.
(1) If the compression increases, the piston, piston rings,
or cylinder waII may be worn.
(2) If the compression stays tow, the valve may be stuck
or seating improperly.
(3) If the compression in adjacent cylinders stays low, the
cylinder head gasket may be defective or the cylinder
head distorted.
1 I. Connect the ignition coit connector.
12. Apply antiseize compound or molybdenum-based lubricant
to the spark plug threads.
73. Install the spark plugs.
Tightening torque:
15-23 N-m (1.5-2.3 m-kg, If-17 ft-Ib)
82-11

B2 REMOVAL
REMOVAL
Warning
l Release the fuel pressure. (Refer to Section FZ.)
PROCEDURE
i. Disconnect the negative battery cable.
2. Drain the engine coolant and transaxle oil.
3. Remove in the order shown in the figure, referring to Removaf Note
Step 1
1. Strut tower bar
2. Undercovers and side covers
3. Air cleaner assembly
4.
Battery bracket
5. Battery cover
6. Battery
7. Battery carrier
8. Accelerator cable
9. Radiator hoses
10. Coolant reservoir hose
f I. Cooling fan connector
12. Radiator switch connector
13. Radiator bracket
14. Radiator and coofing fan assembly
15. Battery duct
16. Air pipe and air bypass valve
17. Intercooler and air pipe
Removat Note . . . . . . . . . . . . .._.. m _._._..., page 82-U
18. Air pipe and gasket
19. P/S and/or AK drive bett
20. P/S oil pump and bracket
Removal Note . . . . .._.__.....~..~........ page BZ-13
21. A/C compressor
Removal Note . . . . . .._................... page 82-I 3
22. Crossmember
02-12

REMOVAL B2
Removal note
intercooler and air pipe
I. Disconnect the hoses shown in the figure.
936032-718
2. Remove the nuts and the intercooler bracket shown in the
figure.
3. Loosen hose band @.
4. Remove bolt @and nut 0.
5. Remove the intercooler and air pipe downward.
RemovaI note
P/S oil pump
Caution
l Do not damage the hoses.
I _ Remove the P/S oil
pump with the hoses still connected.
2. Position the pump away from the engine and secure it with
wire.
93GO52-748
1 93GOB2~749
NC compressor
Caution
l Do not damage the hoses.
1. Remove the AC compressor with the hoses still connected.
2. Position the compressor away from the engine and secure
it with wire.
B2-13

REMOVAL B2
Step 5
1. Engine mount member 5, No.3 engine mount
rubber
Removal Note . . . . . . .._.._...._....-.__._.._-_..-.* below 6. No.4 engine mount rubber and bracket
2. No.2 engine mount rubber and bracket 7. Alternator and drive belt
3. Clutch release cylinder 8. I ntercooler brat kets
Removal Note _._...._.._.._.....,,....__ page B2-18 9. Engine and transaxle assembly
4. Dynamic damper Removal Note . .._.................--.-..
page 62-f 8
Removal note
Engine mount member
1. Suspend the engine with a chain hoist.

82 REMOVAL
03UOSX-81 t
93GOB2-723
82-l 8
2. Remove the No.1 and No.2 engine mount nuts. caution
l Be careful that the engine does not fall when remov-
ing the member.
3. Remove the engine mount member bolts and nuts and the
engine mount mem her.
Clutch release cylinder
I. Remove the release cylinder pipe bracket from the transaxle.
2. Position the release cylinder with the hose connected away
from the transaxle for
easier removal.
Caution
l Do not damage the pipe and hose.
Engine and transaxle assembly
Caution
l Do not damage any components in the engine com-
partment.
1, Remove the engine and transaxle assembly.

REMOVAL B2
Step 6
SeDarate the engine and transaxle in the order shown in the figure.
1. Intake manifold bracket 3. Transaxie mounting bolts
2. Starter and bracket 4. Transaxle
93GOB2-7;
B2-19

B2 ENGINE STAND MOUNTING
ENGINE
STAND MOUNTING
PROCEDURE
1. Remove in the order shown ir! the figure.
1. Exhaust manifold insulator
2. Exhaust manifold and turbocharger assembly 4. Water bypass pipe
5. A/C compressor bracket
3. Exhaust manifold gasket
6. Water inlet pipe
93GOB2-725
82-20

ENGlNE STAND DISMOUNTING B2
ENGiNE STAND DISMOUNTING
PROCEDURE
1. Remove the engine from the SST (engine stand).
2. Remove the SST (engine hanger) from the engine.
3. Install the parts shown in the figure.
4. Tighten the parts to the specified torques.
Torque Specifications
f&n (m-kg, ft-lb)
93GOB2-75
Water Inlet Pipe
1. Remove ail foreign material from the water inlet pipe mount-
ing surfaces.
2. Install a new gasket and the water inlet pipe.
Tightening torque:
f9-25 Nm (1.9-2.6 m-kg, 14-19 ft-lb)
93GOB2-753
82-21

B2 ENGINE STAND DISMOUNTING
93GOB2-7%
93AOB2-077
05WOBX-25
82-22 Water Bypass Pipe
1. Apply a small amount of engine coolant to the new O-ring.
2. install the O-ring on the pipe.
3. InstaIi the water bypass pipe.
A/C Compressor Bracket (if equipped)
1. Install the A/C compressor bracket.
Tightening torque
@: 19-25 N&m (1.9-2.6 m-kg, 14-19 ft-lb)
@: 37-52 Nom (3.8-5.3 m-kg, 27-38 ft-fb)
Exhaust Manifold and Turbocharger Assembly
I= Remove all foreign material from the exhaust manifold con-
tact surfaces.
2. Install a new gasket.
3. Instatl the exhaust manifold and turbocharger assembly.
Tightening torque:
38-46 N-m (3.9-4.7 m-kg, 28-34 ft-lb)
4. Connect the water hose to the water bypass pipe.
5. Connect the water hose and the oil pipe to the cylinder
block.
Tightening torque
@: 12-18 N-m (I -2-l .8 m-kg,
6. Connect the oil return hose to the oi 8.7-13 ft-lb)
I pan.
Exhaust Manifold Insulator
1. Install the exhaust manifold insulator.
Tightening torque:
7.8-I 1 Mm (80-I IO cm-kg, 69-95 in-lb)