Intermittent code 559

[Rawze]

(06-02-2025 )HueyEHester Wrote:  We’ve already replaced that. The only things left are the Fuel Supply Connectors & Injectors everything else has been replaced. Though we’ve got a Main Wiring Harness to replace and will get a ECM if needed.

then the next step(s). are to...

pull all the fuel .lines from the injector feed tubes .. loosen them all and re-torque them to spec. - re-install the lines, get the air out fo the system, and then do the leak test again. Maybe you get lucky and its only a feed-tube issue.

- After that, its capping off injectors up to 3 at a time with a cap-off kit.

[HueyEHester]

I think we got lucky. We replaced all the injector feed tubes and redid the leak test again it didn’t even drop 1000 psi on the leak test. Thanks for the information.