GTI L4-2.0L Turbo (BPY) (2007)
Fuel Pressure Release: Service and Repair
Fuel Pressure In High Pressure Area, Releasing
CAUTION:
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The fuel injection system is divided into a high pressure section (maximum approx. 120 bar) and a low pressure system (approx. 6 bar).
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Before opening high pressure area - e.g. removing high pressure pump, fuel rail, fuel injectors, fuel lines or Fuel Pressure Sensor G247 -
fuel pressure in high pressure area must be reduced to a residual pressure of approx. 6 bar. The procedure for this is as follows.
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Remove electrical connector from Fuel Pressure Regulator Valve N276 -arrow-.
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Allow engine to idle approx. 10 seconds.
NOTE:
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When the Fuel Pressure Regulator Valve N276 electrical connector is disconnected during idle, pressure in high pressure area decreases to
approx. 6 bar.
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After high pressure has been released, high pressure system must be opened immediately. Otherwise, the pressure can increase again due to the
warming of the fuel.
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Switch off ignition.
CAUTION: Fuel lines are pressurized. Wear protective goggles and protective clothing to prevent injuries and contact with skin. Before
opening the high pressure system, place a cloth around the connection.
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Place a clean cloth around connection point and carefully open to release residual pressure of approx. 6 bar. Escaping fuel must be absorbed.
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To conclude work, check DTC memory of Engine Control Module (ECM), erase all DTC entries which may have occurred from removing the
connector.
NOTE: If DTC memory was erased, generate readiness code "Guided Function".