How to change a diesel fuel filter in a 2007 vw passat?

I recommend buying an http://www.haynes.com repair manual for your car. Diesel fuel filter replacement is trickier than gasoline fuel filters sometimes because you need to prime the fuel lines better to start the engine. Always fill the new filter canister with fresh diesel fuel before reinstalling the filter. You'll need a little fresh diesel fuel to do that. Then there is an air bleeder screw that is loosened while cranking the engine to purge any air from the fuel filter and lines. You may need a special wrench to loosen the filter. Make sure never to run too low on fuel because you can end up pumping water from the bottom of the fuel tank up into the fuel filter.

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