Our NL 16kw genny quit at anchor a few nights ago. It slowed down to about 1/2 speed, ran at that speed for a bit and then quit. It would not restart.

It's an obvious fuel issue - there was no fuel at the injectors after it quit. Flow through the primary filter is fine; I replaced the secondary and bled the system. I got a SLIGHT amount of fuel at the injectors but the engine still would not start.

The lift pump puts out a very small quantity of fuel at each pulse - maybe a bit over a teaspoon. Unlike standard automotive fuel pumps of this type, I am not familiar with these particular, very small, diaphragm pumps so I don't know how much fuel they should be moving with each stroke. Can't be too much since they are quite small/short stroke but it seems like very little volume to me. So I'm wondering if anyone has an idea of the volume they should produce at each stroke before I proceed with further troubleshooting.