Q7 TDI fuel filter

[whizznbyu]

Is there a video or a step by step instruction guide for changing out the Q7 TDI 's fuel filter. I was looking at it last night and I'm not certain the filter can be changed without taking the hoses off the housing. Just wanted to make sure I'm not introducing air into the lines and killing the injectors and stuff.

[chittychittybangbang]

No but do you want to take one There's a writeup contest for this and it'll definitely make it into the FAQ and help others. I have a DIY for the oil change but not the fuel filter change. It doesn't help that VW gives free service for 3/36k and Audi owners are all too rich to DIY

Looking at the filter pictures I have, you should be able to loosen the screws around the edge and lift the cap off that way, in other words, not remove any hoses. It should be very similar to this: http://www.myturbodiesel.com/1000q/a...-2005-2006.htm

What I don't know: how to prime the pump. If you turn the key to ON, does the electric fuel pump run? If not, I would prime it using VCDS. Either way, make sure to fill the filter housing w/fuel before putting the cap back on.

Can you remove the housing bottom to clean it out and dump the fuel back into the fuel tank? Any screws holding it down?

Part number for the filter and any seals?

So it should be pretty straightforward, if you were near me I'd even do it for you. But if you want to help out, please do document it so these questions can be answered. Good step by step pictorials will qualify for the writeup contest: Writeup award gift certificate through sponsor KermaTDI

[whizznbyu]

Since VW and Audi are first cousins, I think the application for VW's should be OK for Audi. Regarding priming the lines or filter, on the B5, I've never primed anything. I know that whenever I turn on the ignition on the B5, I hear a pump from the rear of the car shoot what sounds like a high pressure column of fluid/fuel that lasts for about a half a second then it goes quiet. I think the Audi has its own pump as well.

[Johnny Samwich]

I have a 2011 Q7 TDI. I'd like to change the fuel filter myself. I've read that the pump doesn't run when you turn the key so you must hook it to the computer to run the pump?
Thanks

[chittychittybangbang]

Turn the key to the ON position. If you hear the pump running or buzzing then no. I haven't tested the 3.0L engine yet.

[Johnny Samwich]

Originally Posted by chittychittybangbang

Turn the key to the ON position. If you hear the pump running or buzzing then no. I haven't tested the 3.0L engine yet.

I've turned the key to on and I don't hear the fuel pump. Has anyone out there change the fuel filter on a Q7 TDI? I was thinking of trying to fill the filter while installing it. The problem is it sits horizontal so it would be dificult to get it completely full.

[chittychittybangbang]

I posted a pic of the filter in this other thread: Fuel Filter Location

It looks like there's 1 vertical and 1 horizontal filter. The vertical one that looks like the other VW filters is the canister type. The horizontal one looks like you replace the whole thing. I thought it was a fuel pump but the parts manual shows 2 types of filters. The part numbers for the vertical filter are in the other thread, "8k0 127 400 a" is the part number for the horizontal filter if equipped.

If you do this, can you document it with step by step pictures? It would be most helpful since I don't have access to one and it would really help others.

[Johnny Samwich]

I changed my Fuel Filter. (I have the Horizontal one). I diconnected the lines leading to the old one and removed it. I installled the line going to the engine on the new one and tilted it up and filled it up with fuel using a Turkey Baster and then connected it. Car started and ran fine. Mine is a 2011.
Dealer wanted $100. Took me less than 1/2hour.
I had a quick look and didn't see another filter so I don't think it has another one?