oily coolant

[guzabri]

so today after driving my car i checked oil and coolant. the oil looked fine but a little low and the coolant was full of the blackness of oil. it does need an oil change and i was going to do that this weekend. My car hasnt been running completely right but it runs and drives. I now have about 400 miles on it since i put in a new headgasket, clutch, tranny and other things. I think my timing is off a tooth because it sputters at about 4500rpms. There is a little white smoke when i am downshifting for a stop sign.(thats the only time i notice it) And there is a little black smoke every once in a while. Could the turbo seal be out and leaking oil into the coolant or isnt that possible in these turbos? This is my first turbo dodge so im still learning. Or did i blow the headgasket? or did something else happen? I would like to get this figured out pretty quick so all help is appricieted. Thanks

-Brian

[dirtyglhturbo]

was the head pressure checked? it may be cracked.

[guzabri]

head pressure was not checked, we inspected the head for cracking and saw no cracks.

[sittn86]

It could be warped.

[guzabri]

ive been thinking about my problem and i remembered something. So the car starts to sputter around 4500rpms and when i was trying to figure out why it was doing it, i put it in first and floored it, it sputtered for like a second then there was a small bang out of the exhaust. When it detonated or banged could that have been the head gasket getting blown. Its just a thought.