- May 4, 2021
so im new to all this. i bought my first diesel ever about 2 weeks ago. its a 2005 duramax 3500 8inch lift on 38inch tires also has a edge juice with attitude, intake, egr delete, fuel lift pump and i think thats about it. 220k miles. ive researched this topic alot and everyone says if the upper radiator hose is hard after letting it set over night that its a bad head gasket. but everyone else that has this issue also over heats. my truck does not over heat. it stays at 180 unless im on it and making more than 10 psi boost then itll raise the temp to 210. and if i drive it easy and dont hit over 10 psi boost the temp comes back down to 180. and if i keep driving it hard the temp just stays at 210. it doesnt ever go higher than that... i do have to add coolant about once every 2 weeks also. so my question is, is this still a bad headgasket even tho it does not ever overheat? or is there another explaination for this excess pressure? o ya and just the other day i got underneath the hood and started squeezing hoses just to see and i found that the hose going into the heater core the inlet hose is hard going in but the other hose where it comes back out wasnt nearly as hard... i dont know if this could effect it either but my truck only blows hot air when its set to 90 anything from 60-89 and its cold air... thanks for any help. im sure this topic has been discuessed alot already but i just couldnt find anything where people had a hard upper hose but yet they werent overheating.