Engine at operating temperature (oil temperature >= 80 °C).
Remove
Detach spark plug connectors and remove spark plugs with KM-194-E.
Detach wiring harness plug (1) from DIS ignition module.
Open relay holder cover and pull fuel pump relay (2) out of base.
Inspect
Use compression recorder with rubber cone and a measuring range of up to 1750 kPa (17.5 bar) overpressure. 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).
Install
Insert fuel pump relay in base and close relay holder cover.
Connect wiring harness plug to DIS ignition module.
Install spark plugs with KM-194-E into cylinder head – tightening torque 25 Nm / 18 lbf. ft.
Connect spark plug connectors.