2003 marauder was running fine then began overheating out of nowhere and havent been able to figure out on what's going on. I've replaced thermostat. I've replaced the water pump. Nothing has changed. Car gets up to normal temp. Sits there for a lil bit (id say 20 mins) then slowly starts to over heat. Car has no leaks. Car doesn't need reservoir filled or anything. I did remove the reservoir cap after it was hot (let it kool down about 15-20mins before cracking the cap) and it burped out air and a splash of coolant. Figured it was good and jus bled out some air. I also noticed the service bolt on top of the cross tube, I removed the bolt and its bone dry in there. I woulda figured it to have coolant in it since it was attached to all the radiator hoses.
I can squeeze the lower radiator hose and hear it burble up in the coolant reservoir. Squeeze top hose...nothing of any sort. Feels like air. The neck coming off the block will get pretty damn hell hot, but the little 8-10" rad hose with the springs in it and the split off at the thermostat are cold to the touch. Was thinking a blockage somewhere?