I got an ebay pop tester but it was a piece of crap, the pressure gauge was way off, it did not stutter, it did give the spray pattern but that is not all that is required. A quality one would be a bosch one. I did see the merc guy selling his wares too.
But the further research I did, beyond doing it once every 100k km, keeping the tester calibrated and stopping it from gumming up, the range of shims, etc, I calculated that it is not too bad to employ a diesel specialist, you may need him for a pump one day. One which is not too greedy, they do exist, usually working on bulldozers.
You can still install them yourself if you desire the hands on experience.
But the further research I did, beyond doing it once every 100k km, keeping the tester calibrated and stopping it from gumming up, the range of shims, etc, I calculated that it is not too bad to employ a diesel specialist, you may need him for a pump one day. One which is not too greedy, they do exist, usually working on bulldozers.
You can still install them yourself if you desire the hands on experience.
