First time current ramping a fuel pump

This is off a piece of heavy equipment. It's a 45' boom lift with a Ford 2.5 liter, dual fuel engine. This was on a vantage pro, with a generic, low amperage amp clamp on the "high" setting. It appears that there's only 4 commutator segments in the 10ms screen, which equates to around 3,000 RPM. Also, the pump is only drawing an average of 5 Amps for 64 psi of static fuel pressure. The engine will randomly die under load, so I think this is the issue. The amps drop down to about 2 after a couple hours of running, when the engine dies. I guess I'm just more curious if the scope and equipment is set up right for what I was trying to record.

Seems like a good setup to me! Just for fun, you could try lengthening your time base, looking for worn pump bushings. They can show up as a rising/falling pattern across a series of segment humps. Here's an example off a Honda:



3,000 RPM is pretty slow by automotive standards, but I'm not sure what kind of pump setup this boom lift has. I'd be interested to know how the pump power and ground are when the current draw goes down to two amps. If the power/ground stay solid, but the fuel pressure and pump current fall, then I think it's pump time.