Head gasket?

5ek motor, I start the truck and it smokes white like crazy till it warms up then it goes away. Doesn’t smoke going down the road and is running good. At first I was thinking it was an injector and I have about 10k miles since I first noticed the smoke. Last week I noticed a couple drops under the overflow hose so I grabbed a water bottle and it.. had the bubbles. Day after I didn’t notice any loss in coolant but the third day I put in a gallon and ran it 4 more days without adding any. And one day even being empty if I stopped at a light and went to take off it felt like it would load up on take off and white smoke would puff out but it has only done that on that day.

So talking to people and trying to research I’ve come to head or head gasket or liner. The truck was suppose to have 300-400k miles on a rebuild when I got it and I’ve put 150k myself. I did replace all injectors last May, it had a miss after shifting up for a second or two. But replacing them fixed that.
So now I have some down time I’m going to tear into it. I got home and did the bubble test with the over flow tube and there was still bubbles, if I pop the radiator cap there is no bubbles. Then I put the cap back on and there was no bubbles... until probably 30 seconds and it started to bubble and a big splash like it was releasing and then stopped bubbling but returns again after a minute and stops and repeats that pattern...(that’s when I took the video) there’s nothing on the radiator or oil cap or valve covers, it’s all clean.
No oil in the water or vice versa.

just wondering if anyone has seen this before.

 

1995 379. I sent an oil sample off today. I disconnect the line from the compressor to the tanks. Is there any others I should take off?

just read previous post above, thanks

 

I agree on the liner or head gasket.

I just thought it would bubble the whole time. It almost makes me think the compressor was pressurizing the coolant since it isn’t constant bubble and once it reaches pressure it releases it through the overflow. Along with a bad injector leaking so tomorrow I’ll check the turbo and pull the manifold.

I left the radiator cap off last night to release the pressure and started it this morning it was cold out below 32 degrees but still smoked way more than it should have. Went to tighten the cap and smoke appears to come out of the radiator fill hole and maybe a little more blow by than normal. I guess it’s all just starting

I’m prepared for a rebuild if necessary and I do appreciate the input.

I may have found a 6nz with 100k on a silver rebuild so then I’m not sure if I want to swap or rebuild what I got.. just about have the tire bill paid ya know something will go wrong hahaha