Texas Denny
Member
I"ve just rebuilt the engine on my 4010. It has new 4020 sleeves, pistons, piston pins and bearings. The valves have been redone also. It has a rebuilt 4020 injector pump and I"ve had the injectors adjusted as well. When warm, it starts great and runs great. When cold, it starts hard but it does start but it takes too much cranking to do so. If the injection timing is too late, will that cause hard starting when cold? There is some grey smoke when it starts on a cold day but very little once it is running for a minute or two. I rarely see black smoke even on acceleration or pulling. I think it should start better when cold. Am I right? I think the timing needs adjustment.