With winter approaching I decided to change out my glow plugs. 1 was bad for sure, so I put all new ones in along with a new valve cover gasket and wiring to the injectors/plugs. Shoved it all back together, everything worked as it should.
Drove to work for three days with no problems whatsoever (70 miles roundtrip) and on the way home the last day it wouldn't pull hills. No smoke, no rough idle, no check engine light. Got home and no codes, so I disconnected the batteries for awhile, drove it, and finally got a code for the MAP sensor (P1248) so I tested the electrical on both the MAP and EBP and got 5v input on both. Swapped them both out, cleaned out the line going to the EBP sensor, put a new signal hose to the MAP, and now I get white smoke on takeoff, no power, but it's still idling smooth as silk. No codes either.
What. The.....

 

Only other thing I did was fuel up at a different station than usual that morning. Doesn't really seem like a bad fuel issue though.
Any thoughts would be appreciated.

 

So far sounds like the same problems I had with bad fuel. Check your fuel bowl and see what it looks like.

 

Changed the fuel filter first thing and nothing looked out of the ordinary. I changed it with an O'Reilly brand (I know, I know) 2-3 months ago and thought maybe it was the problem. It wasn't.
So you had bad fuel that caused all of this? I figured it would run crappy with bad fuel. It didn't even start smoking until after I changed out the sensors and cleaned the lines.

 

I've really hit a wall here. Looks like draining the tank is in my future

 

Mine would idle, put any throttle into it and it would bog and sputter and belch white smoke.

 

Mine isn't really running bad, just doesn't have any power and now the white smoke issue. I keep trying to find something I might have done (or didn't do) when I was swapping out the glow plugs but everything looks good.
Did you get any of your money back from the fuel station?

 

They paid for all repairs, which just so happened to involve upgrading the injectors

Not saying bad fuel is your problem, just my experience with similar symptoms.

 

I have a friend with a 6.4L. He got bad fuel (gas/diesel mixture) at a station. Cost $8500 to fix it. Fuel station had several claims against them that week, and could not deny it was them. They paid the $8500. Just to let you know you CAN get the station to pay. His insurance went after the station hard, and they paid up pretty quick.

 

Well that's reassuring. Still doesn't get my rig down the road tomorrow, but it's a sliver of light at the end of the tunnel.

 

Are your intercooler boots tight? I assume you pulled it and the spider to pull the valve covers. What are your boost numbers?

 

Blow a boot? Got boost? Filter minder lit up? Any way to check icp?

 

New air and fuel filters put in as soon as I got home. I've double and triple checked the IC boots thinking that I might have forgot to tighten or seat them properly when I did the glow plugs. She's making 0 boost right now, like the wastegate is stuck open but it isn't. I'll check the ICP tomorrow. Would that not throw a code of some sort?

 

Even with the wastegate stuck open, it would make some boost. It just wouldn't be a lot. For you to be making zero boost...should be obvious problem somewhere.

 

Thats, what I say. you should have some boost. 0boost should be fairly easy to find.