Compression, Check
Engine at operating temperature (oil temperature ≥ 80 �C / 176�F).
Detach spark plug connectors and remove spark plugs with KM-194-E.
For 16 LZ2: disconnect wiring harness plug (1) from ignition coil.
For X 16 SZR: disconnect wiring harness plug (2) from DIS ignition module.
For 20 NEJ: disconnect wiring harness plug (3) from DIS ignition module.
Open relay holder cover and remove fuel pump relay (4) from base.
Use compression recorder with rubber cone and measuring range up to 1750 kPa (17.5 bar). Actuate starter for approx. 4 seconds with throttle valve fully open - minimum engine speed 300 rpm.
The pressure difference between the individual cylinders should not exceed 100 kPa (1 bar).
Insert fuel pump relay into socket - ensure plug contact is correct. Close relay frame cover.
For X 16 SZR: Connect wiring harness plug to DIS ignition module.
For 16 LZ 2: connect wiring harness plug to ignition coil.
For 20 NEJ: connect wiring harness plug to DIS ignition module.
Install spark plugs with KM-194-E - tightening torque 25 Nm / 18 lbf. ft.
Connect spark plug connectors.