- Detach the electrical connections from all the injectors.- Disconnect the fuel recirculation pipe from all the injectors.Close the engagement connectors (2) on the fuel recirculation pipe using the special plugs in Examiner Kit N° 2.000017400.Turn the ignition key to the START position for 5 seconds and visually inspect the amount of recirculated fuel coming out of injector (1) connections. Ensure the amounts are evenly matched and small.