Compression test


The compression test is a comparative test and shows whether any cylinder deviates from the others.

We recommend that you read through the entire text before you begin the test.

Note:

The test is run in two or five steps depending on the number of cylinders, and lasts between one and two minutes.

The result is displayed as the difference in rpm per cylinder, compared with the average rpm.

A positive value indicates that the compression is poorer than average and a negative value indicates that it is better.

In order to start the test you must perform the following:

Test conditions:

Procedure:

  1. Engine idling.

  2. Start the function and follow the instructions in the program.

  3. A dialogue box shows the test conditions; check these and press "OK".

  4. The function is complete.