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#4: 03-14-2013, 07:27 PM
 m sprank
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When I bleed and refill I wait until the fan cycles twice before I put the caps on. It can idle all day and never reach a half on the gauge.
Incorrect fill procedure. You probably have a pocket of air that is moving through the system. As the system cools it will give back/take coolant from the res.

Fill it up (slowly, you can also squeeze the upper and lower hoses to burp/cause a siphon). Run it until the fans cycle. Let it cool. Check level again and add as needed. Repeat.

This is why we use a very expensive Snap-On tool at the shop to fill systmes. I actually pull them into a vacuum pre-filling. When I crack the valve, the vacuum pulls the coolant into the system. No air. EVER.
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