Engine Specifications; Engine Troubleshooting; Troubleshooting Guide - Mazda 626 MX-6 Workshop Manual

SPECIFICATIONS
Engine
Type
Cylinder arangement and number
Combustion chamber
Valve system
Displacement
Bore and stroke
Compression ratio
Compression pressure
kPa (kg/cm2, psi)-rpm
Valve timing
Valve clearance
Idle speed (MTX in neutral, ATX " P" range)
Ignition timing
Firing order
S

TROUBLESHOOTING GUIDE

Problem
Difficult starting
Poor idling
Excessive oil
consumption
cc (cu in)
Standard
Minimum
Open
IN
Close
Open
EX
Close
IN
EX
Possible Cause
Malfunction of engine-related components
Burned valve
Worn piston, piston ring, or cylinder
Failed cylinder head gasket
Malfunction of fuel system
Malfunction of electrical system
Malfunction of engine-related components
Malfunction of HLA
Poor valve to valve seat contact
Failed cylinder head gasket
Malfunction of fuel system
Oil working up
Worn piston ring groove or sticking piston ring
Worn piston or cylinder
Oil working down
Worn valve seal
Worn valve stem or guide
Oil leakage
TROUBLESHOOTING GUIDE
model
Turbo
OHC, belt driven 12 valves
mm (in)
8 6 .0 x 94.0 ^3.39 x 3.70)
7.8 : 1
960 (9.8, 139)-260
680 (6.9, 98)-260
BTDC
ABDC
BBDC
ATDC
mm (in) 0: Maintenance-free
mm (in)
0: maintenance-free
rpm
9° ± 1°
BTDC
F2
Non-Turbo
Gasoline, 4 cycle
In line, 4 cylinders
Pentroof
2,184 (133.2)
8.6 : 1
1,120 (11.4, 162)-270
780 (8.0, 114)-270
1 C )°
49°
55°
12°
750 ± 25
6° ± 1°
1 - 3 - 4 - 2
Remedy
Replace
Replace or repair 1-50,51
Replace
Refer to Section 4
Refer to Section 5
Replace
Repair or replace
Replace
Refer to Section 4
Replace
Replace or repair 1-50,51
Replace
Replace
Refer to Section 2
1
86U01X-002
Page
1 -4 3
1 -1 6
1 -6 9
1—45
1-51
1—22
1 -4 3
86U01X-003
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