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Home >> Volkswagen >> 2018 >> Beetle S, 2D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (1.8L, 2.0L & 2.5L - Fuel Supply - Engine Code(S): CBTA, CBUA, CCTA, CPKA, CPLA, CPPA & CPRA (Convertible)) >> 20 Fuel Supply >> Diagnosis And Testing >> Residual Pressure, Checking >> If The Pressure No Longer Decreases (Leak On The Engine Side):

If The Pressure No Longer Decreases (Leak On The Engine Side):

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NOTE:

Look for leaks on the engine-side. Repeat the residual pressure check. Close the shut-off valve -A- this time to determine if there actually is a leak on the engine side.

-- If there is a leak on the engine side, check the fuel pipe and high pressure pump for leaks.

If No Malfunction Is Found Check the Fuel Injectors for Leaks.

-- Remove the spark plugs. Open the drains -A and B-. Activate the fuel pump with output diagnostic test mode.

-- Check through the spark plug holes if there is a leaking injector, fuel collecting on the piston head.

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