Check of residual pressure

Test condition

The fuel pressure must be normal, and a pressure gauge is connected.

Checking fuel pressure

Turn the ignition so many times until the fuel pressure on the pressure gauge is no longer growing.

Determine the oil pressure on the pressure gauge. The nominal value of 4.0-6.0 bar.

Make sure the pressure drop on the pressure gauge. After 10 minutes, the pressure should not be lower than 3.0 bar.

If the pressure drops quickly, the ignition switch so many times until the fuel pressure on the pressure gauge is no longer growing.

Immediately close the valve pressure gauge. The lever must be in position B.

If the pressure drops again, inspect the fuel pump of high pressure for leaks.

If no fault is found, replace the high-pressure pump.

If then the pressure is not reduced, inspect the fuel line to the fuel tank for leaks.

If the fault of the fuel is not detected, then faulty pressure reducing valve in the flange with the fuel filter Replace the fuel filter flange