Troubleshooting injectors (nozzles) should be carried out in case of unstable operation of the engine, poor starting in a warm state, in case of continued short-term operation of the engine after turning off the ignition.
Replacement of all injectors of the injection system must be carried out in the following order. Switch off the ignition, remove the distribution line (ramp) along with injectors (see fig. 4.19).
Take out the inserts (1, fig. 4.145) and injectors (2) from the distribution line. Replace injectors (nozzles).
When installing the injector, lubricate the O-rings with grease type «technical vaseline», to facilitate the sliding of rubber.