Quote:
Originally Posted by FvnnyL3tt3r1ng
Is there a way to check and see if the water pump is running fine without having to tear anything down?
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There is no practical way to check the pumps' performance.
The problem could be impaired flow due to excessive restriction at the radiator (salts' deposits), which also greatly impairs the transfer of heat into the air.
The pump is centrifugal, which means that its flow can go to almost zero if the restrictions to flow in the circuit are high enough, even when the shaft is rotating at normal rpm's.
Unless the vanes of the rotor have disintegrated (which can happen if there is cavitation), the thing pumps as it should.
http://en.wikipedia.org/wiki/Cavitation
"At 10,000 rpm, the water pump pushes the coolant through at eleven gallons per minute, which means that the single quart of liquid in the system is (theoretically) doing a circuit 40 times a minute. Be kind to your hard-working coolant and change it regularly."
http://faq.ninja250.org/wiki/Cooling_system
There is no practical way either to verify that your radiator is clean enough to allow 11 gpm to flow through it.