04 F550 no start when hot

[gorms]

At work I operate an 04 F550 boom lift truck for parking lot lighting, as of today it has 36k miles and about 2200 hours. I personally haven't had too many problems with it, other people at work have. Not 100% sure on the issues, turbo looks new though.

Anyways, today while changing a ballast in a parking lot I shut the truck down so the fumes wouldn't bother people eating outside, and after a few minutes went to start it back up and it cranked over strong but no fire. Thankfully the truck has a battery-backed hydro pump to get you down in such a situation! Once I got down, I let it sit for a few minutes and tried starting, same problem. Checked obvious things, had no manual for even basics though. After about an hour of sitting with the hood open (it was warm today, about 70 here) it fired up like nothing happened.

I'm not new to diesels, not familiar with the 6.0 however. I know the basics of how it runs, not all the common sensors/valves etc. or the terminology so bear with me!

Problem is, I know my boss won't do a thing unltill he has to call a tow truck! I'd like to have a clue anyways, maybe it'll give me something to mess around with if I do get stranded. This truck runs all day, and in the summer I shut it off frequently to keep the cab from roasting. Maybe someone knows a fix for that too, it pumps out HOT air all the time, once warmed up and running for a few minutes in a parking lot.

Thanks in advance!

[kingranch89]

you have a high pressure oil leak of some sort i can almost guarantee

[gorms]

Any common places to look? When I popped the hood it's hard to see any thing recognizable besides the turbo. Props to those who work on these things.


PS I should also note it's been a bit rough starting when cold, fires fairly quickly but does the "romp romp" thing for a few seconds, today it had a few hard knocks mixed in. It's due for an oil change for sure, and it's probably around 40-50 degrees in the shop most of the time.

[kingranch89]

not much you can do without a lot of hassle