My MF50's Perkins diesel for the past 10 years has reliably started with what seems like a touch of the key - zero prolong cranking. A quick crank and fires right off. I've noticed this summer it is taking more and more cranking to get it to start. One running, it is otherwise perfect, no smoke, smooth and just sounding great.
I put a new battery in it, not really helping. What could be going wrong/needs servicing? Are the injectors getting dirty? Should I run some kind of injector cleaning additive in the fuel? Will be changing the fuel filter ASAP too.
Understand cold weather starting difficulties, but never really encountered any warm weather starting issues with a diesel - especially this Perkins.
Any tips/advice would be much appreciated.