Other information:
WARNING
Removing radiator cap
Never attempt to remove the radiator cap while the engine is operating or
hot. Doing so might lead to cooling system and engine damage and could result in
serious personal injury from escaping hot coolant or steam.
Turn the engine off and wait until it cools ...
Compression Pressure Inspection
If the there is lack of power, excessive oil consumption or poor fuel
economy, measure the compression pressure.
1.
Warm up and stop engine.
...