COMPRESSION INSPECTION [MZR-CD (RF Turbo)]

id0110f1800300

Warning
•  When the engine and the oil are hot, they can badly burn. Be careful not to burn yourself during removal/installation of each component.
•  If the glow plug harness connector is connected, the glow plug harness and engine component can come into contact and cause a short when the engine switch is ON. Disconnect the glow plug harness connector before turning the engine switch on.
am6zzw00003612

1.  Verify that the battery is fully charged. (See BATTERY INSPECTION [MZR-CD (RF Turbo)].)

•  Recharge it if necessary. (See BATTERY RECHARGING [MZR-CD (RF Turbo)].)

2.  Warm up the engine to the normal operating system temperature.

3.  Remove the engine cover. (See TIMING BELT REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

4.  Disconnect the fuel injector connector.

5.  Remove all the glow plugs. (See GLOW PLUG REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

6.  Install the SST (49 S013 102A) to the glow plug hole securely.

7.  Connect the SST (49 S010 1A0A) to SST (49 S013 102A).

am6zzw00003613

8.  Fully depress the accelerator pedal and crank the engine.

9.  Inspect each cylinder as above.

•  If the compression in one or more cylinders is low, pour a small amount of clean engine oil into the cylinder and reinspect the compression.
―  If the compression increases, the piston, the piston rings, or cylinder wall may be worn and overhaul is required.
―  If the compression stays low, a valve may be stuck or improperly seated and overhaul is required.
―  If the compression in adjacent cylinders stays low, the cylinder head gasket may be damaged or the cylinder head may be distorted and overhaul is required.
Compression pressure
Standard: 2,900 kPa {29.6 kgf/cm2, 420.6 psi}[250 rpm]
Minimum: 2,700 kPa {27.5 kgf/cm2, 391.6 psi}[250 rpm]
Maximum difference between cylinders: 300 kPa {3.1 kgf/cm2, 43.51 psi}

10.  Remove the SSTs.

11.  Install the glow plug. (See GLOW PLUG REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

12.  Reconnect the fuel injector connector.

13.  Install the engine cover. (See TIMING BELT REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

14.  Erase DTC from PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].)