CYLINDER HEAD GASKET REPLACEMENT
Warning
1. Remove the timing chain. (See TIMING CHAIN REMOVAL/INSTALLATION.)
2. Remove the ignition coil. (See IGNITION COIL REMOVAL/INSTALLATION.)
3. Remove the high-tension lead. (See HIGH-TENSION LEAD REMOVAL/INSTALLATION.)
4. Disconnect the generator, but do not remove it from the vehicle. After disconnection, fix the generator using a rope to prevent it from falling. (See GENERATOR REMOVAL/INSTALLATION.)
5. Remove the front pipe. (See EXHAUST SYSTEM REMOVAL/INSTALLATION.)
6. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
7. Disconnect the heater hose, bypass hose, radiator hose.
8. To firmly support the engine, first set the engine jack and attachment to the oil pan.
Note
9. Remove in the order indicated in the table.
10. Install in the reverse order of removal.
11. Inspect the compression. (See COMPRESSION INSPECTION.)
Camshaft Removal Note
Note
Loosen the camshaft cap bolts in several passes in the order shown.
Cylinder Head Removal Note
Loosen the cylinder head bolts in several passes in the order shown.
Cylinder Head Installation Note
1. Measure the length of each cylinder head bolt.
Length L:
149.0-150.0 mm {5.867-5.905 in}Maximum:
150.5 mm {5.965 in}
2. Tighten the cylinder head bolts in the order shown using the following 5 steps.
(1) Tighten to 5.0 N·m {51.0 kgf·cm, 44.2 in·lbf}
(2) Tighten 13-17 N·m {1.4-1.7 kgf·m, 10.0-12.5 ft·lbf}
(3) Tighten 44-46 N·m {4.5-4.6 kgf·m, 32.5-33.9 ft·lbf}
(4) Tighten 88°-92°
(5) Tighten 88°-92°
Camshaft Installation Note
1. Set the cam position of the No.1 cylinder at the top dead center (TDC) and install the camshaft.
2. Temporarily tighten the camshaft bearing caps in two or three even movements.
3. Tighten the camshaft cap bolts in the order shown using the following two steps.
(1) Tighten to 5.0-9.0 N·m {51.0-91.7 kgf·cm, 44.6-79.5 in·lbf}
(2) Tighten to 14.0-17.0 N·m {1.5-1.7 kgf·m, 10.4-12.5 ft·lbf}
Mazda 6 Service Manual: Supplemental Restraint System (SRS) Precautions
The front and side supplemental restraint systems (SRS) include different types
of air bags. Please verify the different types of air bags which are equipped
on your vehicle by locating the “SRS AIRBAG” location indicators. These indicators
are visible in the area where the air bags are in ...
Mazda 6 Service Manual: Inspecting Engine Oil Level
1. Be sure the vehicle is on a level surface.
2. Warm up the engine to normal operating temperature.
3. Turn it off and wait at least 5 minutes for the oil to return to the oil pan.
4. Pull out the dipstick, wipe it clean, and reinsert it fully.
5. Pull it out again and examine the level.
The ...