Fuel pressure regulator (B235R, B205L/R)
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Fuel pressure regulator (B235R, B205L/R)
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Warning
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Removal of the fuel pressure regulator involves partial dismantling of the car's fuel system. The following points must therefore be observed in connection with this work:
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Work only in a well-ventilated area! If approved equipment for the extraction of fuel vapours is available, be sure to use it.
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Wear suitable gloves! Prolonged contact with fuel can cause skin irritation or dermatitis.
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Keep a class BE fire extinguisher close at hand! Beware of sparks caused by short circuits and when connecting and disconnecting leads in electrical circuits.
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No smoking anywhere in the vicinity.
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Important
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To minimize any residual fuel pressure, remove the fuel pump fuse no. 32 while the engine is idling. Turn off the ignition once the engine has stopped.
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Fit fuse no. 32.
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1.
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Remove the engine cover.
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2.
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Remove the turbocharger delivery pipe by:
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removing the hose from the turbo pressure sensor
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undoing the screw securing the by-pass pipe to the intake pipe on the turbo unit
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unplugging the connector to the temperature sensor on the turbocharger delivery pipe
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undoing the hose clips at the throttle body and the charge air hose
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undoing the screw securing the turbocharger delivery pipe to the bracket on the cylinder head.
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3.
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Detach the vacuum hose from the fuel pressure regulator.
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4.
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Unscrew the bolt and open the clamp.
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5.
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Work loose the fuel pressure regulator.
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1.
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Lubricate the fuel pressure regulator O-ring with acid-free vaseline, part no. 30 06 665.
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2.
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Fit the regulator to the fuel rail and tighten the clamp.
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3.
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Fit the regulator vacuum hose.
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4.
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Fit the turbocharger delivery pipe.
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