Jump to content

  • Do you own an ATV or UTV? Join our Forum!

    Join QUADCRAZY ATV Forum today for FREE! We keep these forums clean and user friendly. All first posters will have to wait to have their content reviewed and approved. Once your first post is approved, you will no longer need to got through an approval process. To gain immediate approval and a NO ADS experience, consider subsribing to our Premium Membership.

Fuel Line PSI Excessive / 2015 Arctic Cat XR 550 XT (Fuel Injected)


Recommended Posts

Had fire start in muffler due to failing fuel pump &/or fuel pressure regulator.  Must I spend the $750+ for a new assembly from Arctic Cat?!?  Here's what I've tried so far.

  • Replaced fuel pump & regulator - both from Quantum.
  • PSI is 60 rather than the 42 the dealer advises it should be, so problem persists.
    •  I've now twice replaced the Quantum regulator & discussed w/ Quantum.
    • They advise that they don't have an alternative regulator that would bring PSI down to 42.
  • I've tried several in-line, adjustable pressure regulators but they either didn't work or I couldn't get a constant pressure from them.
    • FYI, I've only tried the adjustable regulators for Fuel Injected engines however, it seems that they require vacuum to function properly. 

When I can temporarily get the PSI right, everything works great.  Anyone else ever dealt with this problem, and, if so how did you fix it?  Perhaps I should adapt the fuel system to include a gas tank return line?

Any insights are greatly appreciated, Don

Link to comment
Share on other sites

  • Admin changed the title to Fuel Line PSI Excessive / 2015 Arctic Cat XR 550 XT (Fuel Injected)

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...