Switch off the ignition (terminal 15), disconnect the spark plug connectors and remove all spark plugs.
Put the car on the handbrake, move the gearshift lever to neutral, press the clutch and gas pedals.
Press the rubber cone of the pressure gauge to the spark plug hole (in a diesel engine - to the injector hole) of the first cylinder, if necessary, use a suitable adapter.
The assistant turns the engine with the starter approximately 6-8 times. Maximum pressure is reached. Important in gasoline engines: the best filling with fresh working mixture (external preparation of the working mixture) is achieved only with the gas pedal fully depressed.
Read the measured value and write it down. If the pressure gauge has a recording device, switch it to the next cylinder.
The rubber cone of the pressure gauge should seal the spark plug hole. At your command, the assistant starts the starter. The starter should be turned until the recording measuring instrument stops.
Approximate values of compression pressure
| Engine (kW/hp) | Normal | Wear limit |
| 1.4 Zetec-SE (55 kW/75 hp) | 12-14 | 10 |
| 1.6 Zetec-SE (74 kW/100 hp) | 12-14 | 10 |
| 1.8 Zetec-E (85 kW/115 hp) | 12-14 | 10 |
| 2.0 Zetec-E (96 kW/110 hp) | 12-14 | 10 |
| 1.8 Endura-Turbodiesel (55 kW/75 hp) | 28-34 | 24 |
| 1.8 Endura-DI-Turbodiesel (66 kW/90 hp) | 28-34 | 24 |
The text is available on the specified website info portal (www.FordBook.ru)