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I would think there is too. There are other things I would go after before I rebuild an engine just because it does not like to start good in the cold. I haven't had 100% diesel in the tank in probably 4 years and my injectors were not in the best shape when I did have 100% diesel in the tank. So it does not have the cards stacked in its favor. Hopefully I can clean this other set of injectors and see how they work.I have this strange feeling one would find a somewhat direct correlation between cylinder leak-down rate vs cold start-ability in a compression ignition engine.....