High Fuel Pressure, Reducing
The fuel system is under pressure.
Risk of injury from fuel spraying out.
- Wear protective eyewear.
- Wear safety gloves.
- Reduce the pressure: place clean cloths around the connection point and carefully open the connection point.
High Fuel Pressure, Reducing:
-- Turn on the ignition and select the following menu items on the Vehicle Diagnostic Tester:
- 01 - Engine Electronics
- Guided Functions
- 01 - Reduce high fuel pressure
- The fuel pressure reduces to a specified value.
-- Switch off the ignition.
The fuel rail will continue to be filled with fuel, but it will no longer be under high pressure.
The fuel system is under pressure.
Risk of injury from fuel spraying out.
- Wear protective eyewear.
- Wear safety gloves.
- Reduce the pressure: place clean cloths around the connection point and carefully open the connection point.
-- After reducing high fuel pressure, place a clean cloth around the connection and open the high pressure system >>immediately<<. Absorb the discharged fuel.
If the high pressure system is not opened immediately, the pressure will increase because of post-heating.
The ignition can no longer be switched on, otherwise the pressure will increase again.