Make a donation
« previous next »
Pages: [1]   Go Down

Author Topic: high pressure fuel pump reliability  (Read 973 times)

Offline ald1717

  • Always Involved
  • ****
  • Thank You
  • -Given: 17
  • -Receive: 4
  • Posts: 242
  • My Ride: mk5 gti
high pressure fuel pump reliability
« on: February 16, 2022, 08:21:03 pm »
are the high pressure fuel pumps solid and reliable or do they fail eventually just like the lpfp?
Logged

Offline colesey

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 6
  • -Receive: 89
  • Posts: 1019
Re: high pressure fuel pump reliability
« Reply #1 on: February 17, 2022, 09:04:32 am »
The rubber shaft seals are prone to perishing, causing fuel to leak into the engine oil. No separate parts available to repair, so you need to buy a new pump.
Logged

Offline ald1717

  • Always Involved
  • ****
  • Thank You
  • -Given: 17
  • -Receive: 4
  • Posts: 242
  • My Ride: mk5 gti
Re: high pressure fuel pump reliability
« Reply #2 on: February 17, 2022, 09:07:49 am »
i think mine is okay then as i dont have petrol in my oil,
Logged

Offline breeze

  • Always Involved
  • ****
  • Thank You
  • -Given: 27
  • -Receive: 12
  • Posts: 321
Re: high pressure fuel pump reliability
« Reply #3 on: February 17, 2022, 01:59:52 pm »
A common failure is when the cam follower wears through. Then you can get the plunger for the HPFP touching the cam lobe. That is easy to check - either fuel actual vs specified values in VCDS or physically pulling it out and checking the pump plunger for wear.
Logged

Offline ald1717

  • Always Involved
  • ****
  • Thank You
  • -Given: 17
  • -Receive: 4
  • Posts: 242
  • My Ride: mk5 gti
Re: high pressure fuel pump reliability
« Reply #4 on: February 17, 2022, 06:10:47 pm »
changed mine 15000 miles ago, was just curious if they can fail and how
Logged
Pages: [1]   Go Up
« previous next »