- remove the protective casing of the fuel distribution rail;
- relieve fuel pressure in the system;
Pic. 3.105. Fuel pressure gauge: 1 - fuel supply pipeline; 2 - control pressure gauge
- disconnect the fuel supply line (pic. 3.105) and connect the tee (Mot. 1311–08) with control pressure gauge;
Attention! When disconnecting the fuel supply line from the rail, be careful, as there is fuel in the rail and fitting. Take measures to protect the generator.
- start the engine to activate the fuel pump;
- check the pressure on the pressure gauge, which should be constant and equal to (3,5±0,06) bar.
Note. It may take a few seconds for the correct pressure to be reached in the fuel rail.