Turbo LS1
Engine overheating. Changed thermostat but still overheating
Supply hose hot, return hose to thermostat cool. I think thermostat is bad again. What about air pockets, I thought they were all out, any chance there is still air trapped.
Second question. I have disconnected the PCV system and installed a filter. I have noticed that after this overheating issue there is water/antifreeze bubbling on this filter when the engine is at idle. Is it possible that this is due to the overheating?
Any help would be welconme

