Not my truck, helping a friend.
Back Ground. Truck 1990, F350 ex-tow truck, E4OD, stock Re-man engine, low mileage. Truck was runing perfect and was parked. Has been siiting for a few years. Tried starting it over the winter, could never get it to fire. Tried again month ago, found that the front tank has a hole and there had been no fuel feeding the pump. Hooked an electric pump to input of fuel filter, feeding fuel from 5 gallon can. Can hear fuel shutoff solinoid pull. Had 4 of the injectors pop tested, spray pattern lousy but popping correctly. Glow plugs appear to be cycling correctly, about 15 seconds to time out. Tried pouring diesel down manifold (small amount), WD40, even tried starting fluid after making sure glow plugs had cooled and only while cranking. Cranked enough that it even had oil pressure. We never get a pop. I see no smoke out tail pipe. I do see some smoke out intake after cranking. I assume that from diesel off glowplug. We do get periodic puffing out intake. I assume atleast 1 stuck valve from sitting. I do believe we should get fire of some of the cylinders. Trying to convince him to pull valve covers and make sure/try to free valves.
God I wish I had a diesel compresion gauge and a timing adapter would be nice also.

 

Myne smokes while cranking. Not sure why yours isbt

 

Forgot, changed fuel filter, old 1 had more water than fuel. I bled all of the injectors, but bleed seemed kind of weak. I have been wondering if injection pump could have gotten weak from sitting? Injection shop says not likely.

 

Thats not good, open all the injector lines and run your electric again while turning it over, until clean diesel flows out, then re-try it.
Water may have gotten into the pump, thats all I can think of at the moment.