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Old 07-02-2012, 01:25 PM
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You can also try running it without the thermostat (stat) and rad. cap to see if the water is flowing through the engine. You don't want to drive it that way, just let it sit in the driveway and watch the flow through the cap opening. If it flows the pump is working and you know the "propelers" ....also known as the impeller is working properly. You can also do this with the front of the car jacked up ...safely with jack stands, in park, emergy. brake on yada yada. This will allow any air bubbles you may have in the block to work their way forward and escape out the open cap.
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