Truck hard starts

[99red7.3]

Hey guys need some opinons. my truck was having problems starting so i replaced my glow plugs and glow plug relay and the truck started and ran fine. it was setting for three days went out to start it would not start it will crank over but not fire off any ideas guys? i was thinking of running some sea foam through the gas the only thing i can think of is its fuel now any help would be appreciated thanks a lot. Evan

[NCHornet]

You need to see if you are getting fuel, easiest way is to open the fuel bowl drain and crank the engine, it should come out of the drain at a good steady stream!!! Next you want to make sure the oil is full in the HPOP, there is a plug to remove at the top, the oil should be about a 1/2" from the bottom of the threads.

NCH