Forum Discussion

_DJ_1's avatar
_DJ_1
Explorer II
Jan 12, 2018

Well, today it happened!! ~Updated~

Driving down the freeway got the message for low fuel pressure. Few seconds later in to limp mode. Barely got off the freeway safely. AAA towed my truck to the Dealer. My HPFP grenaded at 9300 miles!! Took the injectors with it along with a myriad of other junk. And I do mean JUNK. 2016 Suer Duty with 9300 miles!!! Run nothing but Chevron diesel from a high volume station.

I'm done!! Back to gas!! Don't care if I only climb the mtns at 45 MPH!!! :M:M:M

177 Replies

  • I'm really sorry as well to hear this. Be sure to stay in close contact with the dealer to help ensure that it will be covered under warranty. Please keep us posted.
  • LIKE2BUILD wrote:


    I'm still running all OEM fuel and emissions systems on my RAM 6.7L. So far no major issues and hope none come. I think I'm glad I have the Bosch CP3 in my truck. Not that I can't have problems, but it sure seems like these CP4 grenades are a nightmare.

    KJ


    Yeah the two piston CP4 pumps out higher max pressures than the three piston CP3 found in the Cummins 6.7L with less volume for lubrication. Not a good combo with ULSD.
  • DiskDoctr wrote:
    What kind of additive for anti-gel did you use? If none, that can damage your pump


    Ford. Right from the Dealer.
  • Wow man, really sorry to hear about that. Seems like there are still some problems with the Bosch CP4 HPFP. Hopefully your dealer stands behind everything and doesn't try to hide behind 'contaminated fuel' and tell you it's your problem.

    I'm still running all OEM fuel and emissions systems on my RAM 6.7L. So far no major issues and hope none come. I think I'm glad I have the Bosch CP3 in my truck. Not that I can't have problems, but it sure seems like these CP4 grenades are a nightmare.

    KJ
  • Sorry to hear that man.

    BTW, not all diesels are the same in regards to injection pumps. Some use more reliable pumps than others and they will not grenade when/if they fail.
  • I love old iron but this is one of the reasons i refuse to buy a new truck.

    Sorry for your loss.
  • What kind of additive for anti-gel did you use? If none, that can damage your pump