A Volkswagen Golf TDI's fuel filter is located between the fuel tank and the engine. As fuel travels from the tank to the motor, it first goes through the filter, which ensures that there is no dirt and debris in the fuel supply. Change the TDI's filter at the factory-recommended intervals. Changing the filter is a relatively straightforward procedure that can be done by the owner in a relatively short time.
- Skill level:
- Moderately Challenging
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Things you need
- Torx bits and ratchets
- New fuel filter
Park the car in a well-ventilated area (preferably outside) on a flat, level surface. Open the bonnet. While wearing rubber gloves and eye protection, clean the housing with a rag. The housing is in the front of the engine bay next to the reservoir that holds the coolant.
Loosen the bleed screw on the housing with a Torx screw in order to relieve the pressure on the fuel system. Note that not all Golf TDI models use a bleed screw. Remove the screws that fasten the housing lid in place. The screws will likely be Torx screws unless they were previously replaced. Lift the lid off the housing and clean up any spilt fuel.
Remove the blue seal that is on top of the filter. Remove the old fuel filter from the housing by placing a screwdriver on either side of the filter and prying it up to pop it out. Watch out for any splashing fuel. Remove the green seal located on the bottom of the housing lid. Compare your old filter with the new filter to ensure that you are using the proper replacement.
Remove the bolts from the bracket that holds the filter housing in place in the engine bay. Pour out any gas that is still in the housing. If there is a lot of fuel and there is no debris in it, you can also pour the fuel into the car's gas tank. Wipe the inside of the housing out with a rag. Reinstall the housing and bracket back into the engine bay.
Push the new filter into the housing until you feel it seat firmly onto the bottom of the housing. Pour fresh diesel fuel into the housing until it is full. Install the blue seal on top of the filter and the green seal onto the lid.
Reinstall the housing lid with the screws. Tighten the screws by hand but do not over-tighten them. Turn the key to the "On" position (but not to the engine start position) so that the fuel pump turns on and primes the fuel system. Repeat this three times and then start the engine. Check the filter housing for fuel leaks.
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