• A hot engine can cause severe burns. Turn off the engine and wait until it is cool before removing/installing each part.
• Fuel vapor is hazardous. It can very easily ignite and cause serious injury or death, and damage to equipment. Always keep sparks and flames away from fuel.
• Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the [Fuel Line Safety Procedure] to prevent the fuel from spraying.
― Fuel may cause irritation if it comes in contact with skin and eyes.
― If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
1. Verify that the battery is in a completely charged condition. (See BATTERY INSPECTION [(E)].)
9. Measure the compression pressure using the following procedure.
(1) Install the compression gauge to the spark plug hole.
(2) Fully depress the accelerator pedal.
Note
• The cranking method is as follows.
MTX
― When the ignition switch is pressed with the clutch pedal depressed, cranking starts.
― When your foot is removed from the clutch pedal during cranking, cranking stops.
― When the ignition switch is pressed during cranking, cranking stops.
ATX
― When the ignition switch is pressed with the brake pedal depressed, cranking starts.
― When the ignition switch is pressed during cranking, cranking stops.
(3) Crank the engine and measure the following values simultaneously.
• Compression pressure
• Engine speed
Compression pressure (Compression ratio of 15)
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Standard: Refer to graph
Minimum: Refer to graph
Difference between cylinders: Within 152 kPa {1.55 kgf/cm2, 22.0 psi}[250 rpm]
Compression pressure (Compression ratio of 16.3)
am3zzw00035869
Standard: Refer to graph
Minimum: Refer to graph
Difference between cylinders: Within 156 kPa {1.59 kgf/cm2, 22.6 psi}[250 rpm]
(4) Perform Steps (1) to (3) for all cylinders.
(5) If a measured value is less than the minimum specification, or the difference between cylinders exceeds the specified value, the following conditions could be present. Perform overhaul servicing.
• Wear or damage of piston ring and cylinder wall surface
• Valve seizure, valve attachment failure, or pressure leakage from cylinder head gasket
(6) If a measured value is high, a malfunction in the electric variable valve timing system can be considered.
