Compression Test

Normal Compression Pressure
10-12 bar (145-174 psi)

Minimum Compression Pressure
approx. 8.5 bar (123 psi)

Maximum Difference Between Individual Cylinders
1.5 bar (22 psi)

Special Tools:

Equipment
- Digital tester, also performs compression measurement -- Bear D.A.C.E. model 40-960

NOTE:
- Check compression with engine at operating temperature (60-80°C oil temperature).

- Remove all spark plugs for testing.

- Visually inspect spark plugs for:
a. even coloring
b. proper gap
c. formation of deposits (oil, carbon).

Test Procedure:

Test

Fig. 1:

Fig. 2: