I have replaced the O ring. I have replaced the thermostat and cleaned everything. I have checked for anything that might be stopped up or blocked. I have replaced the head gasket, replaced the valve cover gasket because previous blown and leaking oil. There are no leaks. Car does fine until starts heating up and then all of a sudden water starts spurting from the inlet pipe and the pipe has come out some. Its like the thermostat is not opening up causing the pressure to blow out the pipe. But I have replaced the thermostat 3 times. I am at wits end on this and running out of patience. I am about ready to just take out the thermostat and seal up the housing with jb weld and not worry about having a heater. Any suggestions out there would be greatly appreciated. Thank you.
I'm sorry, but I'm going to have to throw my hat in the ring and say that you have a cracked engine block. If you start the car COLD with the radiator cap off, and you see bubbles = bad. If you don't see bubbles and it just starts pouring out as the engine warms...= maybe not bad. This "crack" I'd worry about might also be a warped cylinder head that opens a passage when it heats up. The only other time I've heard somebody replacing this much stuff without cure is when a Nissan cooling system WASN'T bled out properly upon repair, make sure that's not a thing with your Honda. Cheers!