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Discussion Starter #1
I figured out how to change the fuel filter thanks to the detailed instructions posted on this website. THANK YOU!!!

Now I was just wondering about cleaning the fuel filter housing out as it seemed there were some particles at the bottom when I changed the fuel filter at 40,000 miles. Obviously when I was told the fuel filter was changed at 20,000 miles . . . I was mislead! :mad:

Is there a way to drain the fuel out or do you detach the housing and pour it out?

Thank you!
 

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The best way is to suck it out. Use a turkey baster or other vacuum device to suck the bottom of the filter out. You probably weren't mislead, for all you know there were some dirt particles on the gas station pump nozzle which got into the fuel tank and were filtered out by the fuel filter. It's normal for it to look very dirty.
 

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Discussion Starter #3
I will try your suggestion, thank you. Good to know it is supposed to be that dirty . . . I had no idea.

Once the housing is cleaned out and a new filter is in do you need to put some fuel in the housing? Or an injection cleaner?

Can you use an injection cleaner with a diesel? If yes, what is recommended?
 

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Yes, you can add powerservice (google it) regularly to the fuel tank and pour some diesel purge into the fuel filter housing for the first fill. Do not use gasoline fuel injector cleaner.

Also make sure that the o-rings are properly seated.
 

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yeah, PD filters are filthy. I think the only reason the early cars don't know is because their filters are in a can instead of being just an element.
 

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Discussion Starter #6
I checked out the powerservice and will have some on hand for regular use. I will make a note to add some diesel purge the next time the fuel filter is changed.

Thanks for the input!
 

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As an update to the fuel filter articles, here is DanG144's .pdf file on what's inside the housing center and how fuel is routed inside it. This only applies to the 2 hole wide mouth filter housing because the 1 hole narrow mouth housing is built completely differently.

The article was split into 2005-2006:http://www.myturbodiesel.com/1000q/a5/fuel-filter-VW-Jetta-TDI-2005-2006.htm and 2009-2010: http://www.myturbodiesel.com/1000q/a5/2009-2010-VW-TDI-fuel-filter.htmsince the procedures are slightly different but you can view the .pdf file in either.

Here's a direct link to the file. http://www.myturbodiesel.com/images/pdf/Fuel_Filter_housing_construction_and_flow_paths.pdf
 
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