Fuel Pressure Regulator Valve -N276-, CHECKING: Procedure

-- Remove the engine cover, refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Open the clamp -arrow- and remove the fuel supply hose -1- from the banjo bolt.

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-- Close the open connection on the banjo bolt with a blind plug -arrow-.

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-- Hold the fuel return line -1- in its own container (lengthen the fuel return line if necessary).

-- Remove the fuel return hose -2-.

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-- Seal off the open return connection with an adapter hose -2- and a Hose Clamp - Up To 25mm :3094  .

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-- Hold the fuel return hose -1- in a measuring container.

-- Start the engine and let it run in idle.

Specified Values 

• Return quantity when starting: 0 ml
• Return quantity in 2 minutes: 0 to 50 ml.

If the specified values are not reached, the Fuel Pressure Regulator Valve -N276- is faulty.

-- Secure the fuel supply hose with a new clamp on the banjo bolt.

Fuel System, Bleeding And Checking For Leaks 

-- Let the engine run a few minutes at idle without pressing the accelerator pedal and then stop the engine. The fuel system bleeds itself.

-- Check the entire fuel supply system for leaks.

Replace any leaking parts.

-- Perform a road test where the accelerator pedal is pressed all the way down at least one time. Then check the high pressure area again for leaks.

-- Install the engine cover, refer to ENGINE COVER, REMOVING AND INSTALLING .