Hey ya'll, I need some help. Been running SCT hot street or tow tune since delete when the truck had less than 200 miles. 75k on it now. Put it on regular street tune Thursday night to see what kind of mileage I could get and drove the 100 miles home. Drove 100 miles back to work Friday morning and was blowing white smoke out exhaust. Don't know if it was smoking Thursday night or when I left the house Friday since it was dark and I wasn't really paying attention. Checked primary coolant tank. Called my bride and talked her into bringing me some pre-mixed from my shop and added about a gallon. Put it back in hot street mode. Drove home Friday night and added another half gallon. Oil is just starting to darken up after oil change last week, but no water in it. No oil or diesel in degas tank. Doesn't smoke all the time, but you can really smell the coolant when it does. Haven't pushed it very hard lately, hasn't gotten hot, coolant was full at oil change last week. No coolant drips, valley is dry. Pressured system today and lost about a pint out of the tank. Found it as soon as I started it. Big billowing clouds of coolant steam. I've lost head gaskets before, but always had emulsion in oil pan or popped a coolant line from over pressure, and a constant steam cloud when running. EGR is sitting on a pallet with the DPF so that can't be it. If I had any hair left I'd be pulling it out. What do ya'll think?

That’s kinda what I was thinking. Had to take my bride’s truck to work today for fear of doing permanent damage. Is there any way coolant could get around the ERG block off plate?

Yes, primary degas on driver side. Guess that answers the block off plate question. I was hoping for something simple.

And no, I figured the warranty was null and void a week after I brought it home!

I’ll do that this evening. I hope. Thanks for the advice y’all!

It’s a 2015. The EGR has been deleted and in the junk pile. I had a 2011 that gave me zero problems until the turbo went out at 165k. Was hoping this one would last as long. I put the retrofit ‘15 turbo kit on it and sold it. Far as I know it’s still going strong.

Pulled glow plugs on left bank. Cranked it over key off and blew coolant out of #1 cyl. 1st question is should I do both HG, 2nd question was about resurfacing the head, but I think that’s probably the only way to feel comfortable. Mind you this will be done in my shop after a 12 hour shift and drive time. But still think it’ll be quicker than the “we can look at it in a couple weeks” I get from the shops around here.

It’ll all be cab on. Right bank looks like it’ll be a real booger to get off, but it looks doable. Hadn’t thought about reman heads. That might be a little rich for my blood though.