I Did It! Changed out my Cayenne Fuel Pumps + Filter

[Determined]

What a sense of relief to no longer deal with the smell of fuel coming from drivers side rear. Disassembly was not too bad, the drivers side was the source of my leak and it was very evident on the surface of the filter. There was a puddle of fuel there, the passenger side was still sealed up nicely.

After completely opening both sides at first glance I said to myself what did I get myself into now. I did run the fuel down low to about 2-gallons remaining before starting the job, this was very helpful. I'll post a few pictures later, the fuel smell messed with my judgement for a while. At one point I lost sight of where all my hoses connected to so I just took a few minutes break for fresh air then started again. In total about 4-hours for me, I could have done it sooner but as I mentioned I had some doubt at one point.

After sealing it up, I closed my eyes when turning the key to start. At first it would not start but I kept cranking it and walah!!! It was purring like a kitten, I ran it a while then took it out for a drive. I did notice improved acceleration from start point and at freeway speeds. I used factory VDO pumps and filter, I hope this was a good choice knowing my original pumps starting going near 70k. Overall it was a good challenge, not as much as the coolant tubes or driveshaft but it's done now. Next, I still want to replace my coolant tank and transmission fluid.

[reachme]

the fuel smell messed with my judgement for a while

some people pay a lot of money for that, you got it as a side benefit. Glad to hear it came out well. I have not had a need yet but someday I'm sure. drive it with pride now

[Mike80911]

Mine went at about 70k miles also seems like they are designed to fail at that point. I had a local shop do the job he charged me $300 for labor and I supplied the parts. I wanted to tackle it but did not have the time. Glad that it all went well a write up with pictures would probably help a lot of others out when they need to replace them.

[Determined]

It drove well on the way to the airport this morning, I'll try and get some pictures up but what I found interesting is the origin of the fuel leak. At first glance I thought it came from the top of the fuel filter itself (possibly a hair line crack), but when I removed the fuel filter the gasket appears to have two opposing indentations in the seal that clearly created a path for the fuel to leak. It appeared to be mis-installed at the factory.

I'm not sure what others determined to be the source of the leak but this is what I found. The passenger side gasket which did not leak did not have any damage at all.

Thanks guys!

Determined