2006 f550 6.0
Will start with brake cleaner, however, won't start
on its own. Runs fine, as soon a I lift my foot off
the pedal, it will die.
Could be a plugged fuel filter, or low fuel pressure due to a bad fuel pump, should check the fuel pressure, and pull the vacuum line off of the fuel regulator, look for any leaking gas, look in the vacuum hose, and try starting it with the vacuum line plugged. Spraying a combustible fluid into the throttle body and it starts indicate a fuel pressure issue.
Sounds like you may have a high pressure oil leak. Check for codes, if you have one about the ICP (injector control pressure) being less than desired then that's the case.
Can you monitor high pressure oil while cranking? It needs around 600 psi to crank. Also try to see if it starts with the icp unplugged
I've got the scanner hooked up. After I start it with brake cleaner, there are no codes and all sensors are showing values that the manufacturer specifies. If I keep it above 1000 RPMs it'll run good.
Yes but what is the injector pressure while cranking?
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