Disconnect the fuel supply line F, install a tee. equipped with a control pressure gauge.
Attention! When disconnecting the fuel supply line from the rail, be careful, so-called. there is fuel in the rail and fitting. Take steps to protect vulnerable parts.
Start the engine to activate the fuel pump.
Check the pressure on the pressure gauge, the value of which should be constant
Measured pressure: 3.5 bar±0.6.
Note. It may take a few seconds to get the correct rail pressure reading.