Step by step repair guide on how to perform an automotive engine cylinder compression
test, this article pertains to all internal combustion engines.
Difficulty Scale: 4 of 10
Begin with the vehicle on level ground, engine "OFF" with the parking brake set.
Step 1 - Before a compression test can be begin,
the engine must be disabled so it doesn't start. One way to achieve this is to remove
the fuel pump or ignition fuse which can be done by referencing the owners manual.
Other methods include disconnecting the ignition module or coils.