07-16-2014, 02:14 PM
My overflow tank doesn't seem to be able to return coolant to the radiator. It gets filled to the top, even as the radiator is low on coolant (well maybe a pint from being full). After it got filled to the top (and then some I think) I took it off and cleaned it (turns out there was about an ounce of sludge at the bottom), then tested the the hose and water was able to flow both directions through it. I don't think the sludge was viscous enough to block the flow back into the radiator.
Some maybe relevant background info:
It overheated about about 70 mi ago (on PO), I haven't figured out why
I added more coolant, and drove 70 mi with no overheating
The head gasket is almost new
I wouldn't rule out that there's a coolant leak somewhere
Some maybe relevant background info:
It overheated about about 70 mi ago (on PO), I haven't figured out why
I added more coolant, and drove 70 mi with no overheating
The head gasket is almost new
I wouldn't rule out that there's a coolant leak somewhere