EG–9 ENGINE – ENGINE MECHANICAL COMPRESSION CHECK HINT: If there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure. 1. WARM UP AND STOP ENGINE Allow the engine to warm up to normal operating tempera- ture. 2. 2JZ–GE: DISCONNECT DISTRIBUTOR CONNECTOR 3. 2JZ–GTE: DISCONNECT CAMSHAFT POSITION SENSOR CON- NECTORS 4. 2JZ–GE: DISCONNECT HIGH–TENSION CORDS FROM SPARK PLUGS (See high–tension cords and cord clamps removal in Ignition System) 5. 2JZ–GTE: REMOVE IGNITION COILS ASSEMBLIES (See ignition coils removal in Ignition System) 6. REMOVE SPARK PLUGS 7. CHECK CYLINDER COMPRESSION (a) Insert a compression tester into the spark plug hole. (b) While cranking the engine, measure the compression pressure. HINT: Always use a fully charged battery to obtain engine rev- olutions of 250 rpm or more. (c) Repeat steps (a) through (b) for each cylinder. NOTICE: This measurement must be done in as short a time as possible. Standard pressure: 2JZ–GE 1,275 kPa (13.0 kgf/cm2, 185 psi) or more 2JZ–GTE 1,079 kPa (11.0 kgf/cm2, 156 psi) or more Minimum pressure: 2JZ–GE 1,079 kPa (11.0 kgf/cm2, 156 psi) 2JZ–GTE 883 kPa (9.0 kgf/cm2, 128 psi) Difference between each cylinder: 98 kPa (1.0 kgf/cm2, 14 psi) or less (d) If the cylinder compression in 1 or more cylinders is low, pour a small amount of engine oil into the cylinder through the spark plug hole and repeat steps (a) through (b) for the cylinder with low compression. Compression Tester P12302