[jocko]

Well.. no leaks on the vac side of the fpr, and I showed rock steady 45 psi with key on and rock solid 45 psi running (and, of course, it started right up... ha). But - I did notice that it bled down rather quickly after shutdown - but I didn’t really measure/time it either. So I went back to re-test and now all I get is zero psi... yet the truck runs perfect. Reattached to the Schrader valve several times, nothin. I think my gauge actually bit the dust, ha, perfect timing. Could still be the fpr, but troubleshooting came to a screeching halt when the gauge quit. Kinda hoping it’s not a leaky injector, but certainly possible - or the check valve, as has been mentioned. I’m gonna try my “bad” gauge on another truck just to make sure I’m not losing my mind. Once that is resolved, the troubleshooting can continue. Strange behavior.