I agree, I used easy start to start my 220 Cummins diesel engine without any detremental effects. On the plus side it saved buying starter motors.
As long as the engine is spinning over and only a little is used then it's OK
My engine used to start instantly on a little easy start and had done close on 200,000 miles when I sold it.
The reason it was used was to save the battery and the starter as big old diesels were bad starters. also Cummins would provide a pump to pump in easy start if the buyer requested it.
In the seventies, the Ford transit with the York engine also had a pump on the dash to pump in easy start .
I think it is a fault with the glow plugs (never use easy start and glow plugs together BTW)
Ah sounds like the old 12.2 NTK 220 cummins, Atki / ERF ect ? what ever the problem they had with that they solved it with the 14 ltr and the 290 big cam 10ltr which are bulit proof. I don't know much about CMC engines, But I dout they do an easy start aplicator kit for the intake manifold. Here is the question (put to me by an old diesel fitter). "How the f**K can a lump of iron become addicted to somthing?" He was of the opinion that dodgy batterys, bad wiring, knackerd heater plugs, carp compretion and poorly set up timing could cause poor starting. and unless these problems where solved then you would continue to need to give it a wiff of the yellow can first thing in the morning PERIOD! He may be right? You never here owners of Gardner 6LXB's or 200Tdi's needing a wiff of over Easy even on the coldest winter morn.