Well, to start off, I have 300,000 Org miles trans and motor... I have replaced the water pump Thermostat has been removed for a few years now. new Radiator. Ect the whole 10 yards. in the last few years.
I was crusing 90-105mph. On i55 for quite a few miles. all sudden from 100-110 degrees spiked to 210 in mins. then 260. Open the Rad. Nothing but AIR no water/coolant. What was left was in the reservoir Cap popped off. Bleeding everywhere. This has done this 3 times. i just top it off bleed it and good to go. for about a month or two. But this time its gotten worst. The oil is clean. Not a trace of water or milky. I have not done a compression test. I'm about 88+ miles from it as of now.. I'm leaning towards a head gasket it. But theres no water in the tailpipe or smoke or coolant smell, Only time it ever smokes is when your really push on it it will burn black, in theory Black smoke for too much gasoline or not enough air....
I do not have the start-up smoke will look thick and blue, Nor smoke when warmed up will still be white until oil burning .. So i'm good there. I have this funky looking radiator cap. With a pressure release tab. I'm wondering if that caused to go bad? I also have gotten a shorter belt I deleted the A/C since i never use it with the sunroof always open. And that's when the REAL issue started.
Soon as i changed belts i had the problem then.. But none the less. I Bleed it, Crack both valves til it comes out. of the T-stat housing. Plug it all back up. run it. it's good for a bit. I also noticed. If i start it. let it warm up the temp gauge will rise quick. just sitting there idle it has hit 260 at idle i ran inside and was doing something. gave it some Revs it drops back to 110* So i'm really lost for words. What is causing it. A blown head gasket. or just a Radiator cap. or the belt not doing enough being short. Worst over heating was over 260* it touched the 10mph mark. So i'm leaning now towards a head gasket. But i also have heard theses are Strong built motors.. With 300,000 miles.
