> The old hose definitely had holes in it; I tested by partially submersing >> it in water. The new hose is airtight - and clear - and I saw how it >> sucked fluid up from the overflow tank when the engine started. > > > That last part seems backwards. When the engine is started and is getting > warmer, the expansion of the coolant in the system should force liquid or > gases, whatever is at the top, out of the pressure tank and toward the > overflow tank. When the system is cooling down the coolant should be > sucked from the overflow tank. > > Have you tested your pressure cap? > When I rev the engine, the pressure tank always sucks fluid down - the reverse when the revs go down (barfing coolant onto the exhaust - mmm). I agree with what you are saying when the system has heated up, but I had just turned on the engine and went to check and, thanks to the clear hose, I saw it had drawn fluid up. |
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