How can broken Valve Spring, Valve Spring Retainer and Valve Stem Oil Seal be replaced without removing the cylinder heads for V6 engines on Volkswagen Passat?

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Accepted Answer

Defective valve stem seals and broken valve springs can be changed by removing the cylinder heads, normally with 2 special tools and a source of compressed air. Start with the removal of the valve cover, camshaft, and lifters, followed by the removal of the spark plug in the affected cylinder or all the spark plugs in case of replacing all the valve stem seals. Rotate the crankshaft until the piston reaches TDC where the first cylinder starts and the firing sequence should be followed, or in DOHC engines, the second cylinder should start. Insert a threaded air hose adapter into the spark plug hole and attach it to a source of compressed air and spray air into the engine to hold the valves open. Wrap rags on stuff around the valve holes to allow nothing to fall into it then carefully strike the valve spring retainers with a blow to sever the connection between the retainers and the keepers. Compress the spring using a valve spring compressor and remove the keepers using pliers or magnet, be sure to use the matching type of compressor; Import type. Unscrew the valve spring and retainer, and be careful to leave the valve held in the closed position by air pressure so as not to break it. Take off old valve stem seals, be careful of the intake and exhaust seal differences and press the valve stem in place with a rubber band or tapes and then release the air pressure. Check the valve stem, make sure that it slides freely in the guide; otherwise the head must be taken off to be repaired. Once more, apply air pressure to hold the valve, rub the stem with engine oil and fit a fresh seal, being careful that a protective sleeve is put on to prevent damage. Install the valve spring and retainer, push the spring and fit the keepers with grease to keep in place. Take the spring tool off, disconnect the air hose and take off the adapter. Lastly, re-fit the camshaft, lifters, timing belt, valve cover, spark plug(s), and wires, and start engine and investigate any oil leaks and abnormal sounds.

Genuine Volkswagen Passat Valve Spring

11 Valve Springs found

Volkswagen Passat Valve Springs Part Number: 078-109-623-A

Volkswagen Passat Valve Springs Part Number: 028-109-623-A

Volkswagen Passat Valve Springs Part Number: 038-109-623-F

Volkswagen Passat Valve Springs Part Number: 03H-109-623-C

Volkswagen Passat Rotor Part Number: 078-109-633-A

Volkswagen Passat Valve Springs Part Number: 038-109-633

Volkswagen Passat Intake Valve Part Number: 06D-109-601-M

Volkswagen Passat Exhaust Valve Part Number: 06D-109-611-H

Volkswagen Passat Valve Springs Part Number: 078-109-623-B

Volkswagen Passat Valve Springs Part Number: 021-109-633

Volkswagen Passat Exhaust Valve Part Number: 021-109-623-L

Volkswagen Passat Valve Spring

Volkswagen Passat Valve Spring Parts and Q&A

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