Remove the plug from the pressure measurement hole, install the fitting from the Mot. 1311-03 kit, equipped with a control pressure gauge.
Caution! When removing the ramp pipe, be careful, as there is fuel in the so-called ramp and fitting. Take measures to protect vulnerable parts.
Start the engine to operate the fuel pump.
Check the pressure on the pressure gauge, the value of which should be constant.
(You can find the original at this link: Renaultbook.ru)
Measured pressure 3.5 bar ±0.6.
Note: It may take several seconds to obtain a correct fuel rail pressure reading.