97 rough idle now no start, plz help

[zappattack1800]

alright my 97 powerstroke is dead, the other day while on my lunch break i started my truck and everything way normal for about 30-45 seconds, all of a sudden the idle got super rough, i was able to keep it running by reving it up but the truck wouldnt go over 15mph... now 2 days later the truck wont start at all, when im cranking i get smoke from the engine bay and lots of white smoke from the exhaust. im not getting any lights on the dash either.

the things i have changed:

-cam sensor
-fuel filter
-made sure im getting fuel in the fuel bowl

and thats it, i really dont know what eles to check since this is my first diesel
the truck has run flawlessy before then like a switch everything stops.

any help or options i can check or replace? please guys i need some help this is my daily driver!
thanks fellas

[ianstew]

i would bet you smoked a harness. check all the valve cover gasket wiring harnesses for burns and melting.

[zappattack1800]

sorry i forgot i checked the harness, and smelt the oil cap and nothing smelt burnt, and other then being dirty the harness looks good, also checked all the plugs that i could see and made sure everything is pluged in and no broken wires.... thanks for helping out

[dhanna6powerstroke]

Does your "wait to start" light come on?

[zappattack1800]

yes it does, everything in the cab seems normal, the "wait to start" goes on then off in the same amount of time as it did before, no lights come on or flash....just when i crank nothing happens now, no start.... now it doesnt even sound close to starting, 2 days ago it would start but sounded like the world was comming to an end, was TERRIBLE, but now it wont do sh*t..... thanks for helping fellas

[dhanna6powerstroke]

Originally Posted by zappattack1800

yes it does, everything in the cab seems normal, the "wait to start" goes on then off in the same amount of time as it did before, no lights come on or flash....just when i crank nothing happens now, no start.... now it doesnt even sound close to starting, 2 days ago it would start but sounded like the world was comming to an end, was TERRIBLE, but now it wont do sh*t..... thanks for helping fellas

Which harnesses have you checked? The ones that cause issues are under the valve covers. Referred to as the UVCH.

[Nashotah7]

Maybe some bad fuel. Where is the smoke coming from in the engine bay?

[zappattack1800]

i tryed to check all the wires above the engine, as for the wire harness that goes to the valve covers, i checked them to the point where they go into the valve covers but not under the valve covers, i did check under them when i did glow plugs in december, and they appeared to be ok, i though bad desel too, so today i put some fuel in my front tank that way empty, changed the fuel filter for the 2nd time and cranked away, but still nothing, not sure how long it would take for the fuel to travel to the injectors, but i did crank for a while....

[Nashotah7]

It should only takes 10 - 20 seconds from out of fuel to start.....maybe a little longer. I'm wondering if your hpop isn't leaking, you never said where it was smoking from in the engine bay. Maybe a bad fuel line? Thus the smoking in the engine bay?

[zappattack1800]

o sorry, the smoke in the engine bay is from the rear of the valley, kinda near the turbo from what i can tell. i just got ahold of a snap-on fuel pressure reader, so ill test that tomorrow morning