So I have a 98 k2500 with 186k ip went bad end of 2016 put a new one in got the timing good enough to start it next day went to start it to take it to a mechanic and time it no go, every glow plug broke off in the head, then life happened pushed it out of the shop and bought another truck .... fast forward 3 years started working on it again put new plugs it the fsd was new mid 2016. It’s all back together now, and it will crank but won’t even act like it’s going to start. Pulled 4 plugs drivers side and have fuel mist but no start. Could it just be old fuel?