Ninetysevenps
Registered User
1997 7.3- I replaced injector sleeves due to fuel in coolant and de gas bottle, when I finished I turned engine over by hand 2 or 3 times to remove oil/fuel from cylinders, it started and ran great but I had coolant overflow from de gas bottle, I let it sit overnight and when I tried to start it the next morning it felt locked-up, I turned the engine by hand again and it started and ran fine again, after only 4-5 minutes I checked the oil and noticed coolant had mixed with the crankcase oil (milky color). I pressurized the coolant system and found no leaks at the top of the new sleeves but I found coolant was leaking/dripping into at least 5 cylinders. I removed the new injector sleeves and noticed I did not get them fully seated into the bottom flange. I understand the compression leaking past the sleeve and into the coolant overflowing the de gas bottle and the coolant leaking back into the cylinders overnight causing the hydro-lock the next morning, but I'm confused about the mixing of coolant with the oil, I'm concerned that when I tried to start it the next morning with it hydro-locked that it blew the head gasket or worse, I don't know if that's possible so my question is how else could the coolant and oil mix due to poorly installed/leaking injector sleeves. I changed the oil cooler seals about 2 months ago and have never had oil-coolant mixture problems before. I would like to know more before I put everything back together. Sorry for the long post but I wanted to give as much info as possible
Thanks for any help or ideas
Thanks for any help or ideas