Need help diagnosing high pressure fuel pump issues

That will do it. I'm glad you noticed it.

Take care of yourself and please feel free to come back anytime in the future. You're always welcome here.

Take care,

Joe

Hi,

Sorry to hear that. I read back through everything. Are you certain there isn't an injector leaking? Have you tried a leak-down test on the fuel system?

Let me know.

Joe

Hi,

It's possible. You don't have to remove the injectors to check if there is a leak somewhere in the system. You will need to perform a fuel pressure drop-off test. First, start the engine and allow pressure to build. Then, see how quickly it drops when the key is turned off.

Here is what the manufacturer indicates:

2.1. Same tool setup and connection as for measuring the fuel delivery pressure (see above).
2.2. Allow engine to run for a few minutes. Switch off engine. Check the pressure drop. Drop in fuel pressure after "ignition is switched off" must not exceed 1 bar after 1 hour. Make sure that the tool setup itself does not have any leaks (even the slightest leak). The fuel retaining pressure will decrease extremely rapidly and falsify the measured result with even the tiniest leak.

This will at least identify if there is a leak.

Let me know what I can do to help.

Joe

Excellent! I'm glad to hear you found the problem. Isn't it funny how the smallest part can cause the biggest problem? LOL

Regardless, give yourself a good pat on the back from me for a job well done. Also, please feel free to come back anytime in the future if you have questions or need help with something. You're always welcome here.

Take care of yourself,

Joe

Nicely done. That was a lot to do. Again, feel free to come back anytime in the future.

Take care,

Joe