Hi All
First time posting on here and I need some help. I have a 2008 F350 and I just installed a Mishimoto radiator, Sinister Diesel 6.0 Degas bottle with new cap and silicon hoses. Filled the system back up slowly and took it for a drive everything work fine temp stayed at 192 to 194 when I pushed it hard it went up to 200 for a few seconds and down it went. I parked it and checked inside engine compartment to see if everything is good and noticed the hose on top of radiator was a little swollen at the fitting. After about 1hr went back outside and saw coolant coming out from underneath the truck and saw that the coolant was coming out from the hose that is connected on the right side of radiator. Leaking from were the silicon hose connects to the fitting of the radiator. The strap on hose was tight. Another thing I noticed while i was under the truck is that the 2 hose underneath that connect together with a nipple were also separating and I could see half the nipple. It looks like there is a lot of pressure in those hoses. After about a gal of coolant came out it stopped leaking. Cant figure out what happened maybe someone can direct me to what I missed or what I need to do.or what to look for. Any help is greatly appreciated. Thanks

 

Any chance you have a blown head gasket that's pumping compression into the cooling system?

 

How would I check to know if I have a blown head gasket

 

Did you get the updated hoses with the dual o-rings? Sounds like a bad hose.

 

I got the Mishimoto silicon hose

 

By doing a leak-down or compression test.