Checking oil pressure (Mondeo 2)

The oil pressure can be checked with the engine running, for this you will need a pressure gauge with a suitable connection, which is screwed in instead of the oil pressure sensor on the cylinder head. Measure the oil pressure on a warm engine, at the speed specified below:

- disconnect the battery;

- insert the pressure gauge connecting hose from above into the engine compartment so that it can be reached from below;

- place the front of the car on supports;

- disconnect the plug from the oil pressure switch on the cylinder block and unscrew the oil pressure sensor with a ring spanner;

- screw in a pressure gauge with a hose and a corresponding tip instead of the switch;

- start the engine and first let it run at 800–805 мин⁻¹, then increase the speed to 4000 мин⁻¹. The obtained values should be 130–250 and 370–550 kPa, respectively. If the oil pressure is too high, the pressure relief valve may be closed. Low pressure indicates a clogged oil filter, a broken oil line, or a faulty oil pump. If the oil pressure is low at low speeds, the pressure relief valve may be open;

- lift the car and screw in the oil pressure sensor (27 Nm);

- lubricate the threads with sealant to prevent oil leaks;

- lower the car.