The problem with the likes of Bradex easy start is the engine becomes addicted to it. We had a John Deere FEL (it got christened John Oh Dear) there was no chance of getting it going without it’s “fix”. The production lads weren’t allowed to have easy start so we had to start the damn thing.
Explain why a brand new engine wouldn’t start without it. I’m no diesel fitter having avoided them all my live.