Other information:
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.
...
If it is necessary to rock the vehicle to free it from snow, sand, or mud, first
turn the steering wheel right and left to clear the area around your front wheels.
Then, shift back and forth between R (Reverse) and any forward gear in vehicles
equipped with an Automatic Transaxle. Do not race ...