So lately I've noticed my temp gauge getting a little higher than normal at stop lights and decided to check on some things. As soon as i start the engine im getting small bubbles in the expansion tank. I just recently did a HG job on it not more then 3k miles ago. I cant remember before the HG job and after if there was bubbles in the expansion tank while engine was running.
I did perform a block test on it twice at different times and both times the block tester fluid stayed blue. Before i replaced the HG the block tester fluid turned yellow after a few quick pumps of the bulb.
Im hoping air got in there somehow and its not the gaskets again. I do see some dried coolant that leaked a tiny bit out of the small coolant line that runs from the top of the expansion tank (not the overflow line) to the engine.
I've been meaning to bleed the coolant but haven't had time to get to it yet.
My main question is; is there supposed to be bubbles in the expansion tank while engine is operating or not?
I did perform a block test on it twice at different times and both times the block tester fluid stayed blue. Before i replaced the HG the block tester fluid turned yellow after a few quick pumps of the bulb.
Im hoping air got in there somehow and its not the gaskets again. I do see some dried coolant that leaked a tiny bit out of the small coolant line that runs from the top of the expansion tank (not the overflow line) to the engine.
I've been meaning to bleed the coolant but haven't had time to get to it yet.
My main question is; is there supposed to be bubbles in the expansion tank while engine is operating or not?