Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

High pressure fuel pump, leaking from bottom of fuel regulator!!

Recommended Posts

Is there any chance I can just replace the high pressure fuel regulator as this is where it is leaking from??? or does it mean if it's leaking from the regulator the entire hpfp needs to be replaced. Sorry don't know much about this problem, require urgent assistance or advice?! It's a 2009 gts cayenne, it's only just done 100,000 km on the clock now..

Link to comment
Share on other sites

You should replace the entire HPFP.  This very problem is the reason I preemptively replaced my HPFP last month.  If you're not changing your own oil so you can smell and feel the oil or doing oil analysis this can be easy to miss.  The HPFP can leak gasoline into your oil and cause fuel dilution.  The pumps were also revised as time went on.


I would order a new HPFP using your VIN from Sunset.  Also I don't know as much about the 2009 but I suspect it could use a flat tappet.  If that is the case I would carefully inspect the tappet and camshaft lobe where it makes contact.  Even looking at my roller tappet at 100K miles it had very light scoring and when you shook it compared to the new part you could hear more play, so I replaced it even though everyone says you don't need to.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.