Bad news... I noticed a lot of white smoke blowing out of my tailpipe the other day while I was at operating temp. I checked under the cap today and found this...
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Also, the coolant was nowhere in sight when I peeked into the radiator.
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I know the radiator needs a flush ASAP, but I needed the truck today. Also, the oil looked fine. No sludge/milkshake nastiness under the oil cap.
I immediately drove to the auto parts store (in a different car) and grabbed a no-spill funnel and 1 qt. of coolant.
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The suburban took the whole quart and I still couldn't see the coolant. I checked for leaks but there were none to be found. So I ran back to the store and bought another 2 quarts. It took another half quart then I began the process to bleed the system.
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The system was burping itself... and burping... and burping. It finally stopped 5 minutes after starting the truck so I revved it to 2k RPMs to help speed up the process of getting it to operating temp. During that time it was burping like crazy. At that point I was 99% sure it was the head gasket...
The thermostat finally opened and the coolant burping process was done. It stopped bubbling... until I brought up the engine speed. Then the bubbling would happen again. No smoke out the tailpipe, no smoke in the engine bay, no coolant on the ground. But while I did inspect the rear of the truck I was greeted by this surprise
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Yep, that's right... water coming out of the tailpipes. Almost a constant drip as well. I was 110% confident it was a blown head gasket at that point. Yay.
So, at that point I did what any man would do and let some eye sweat roll down the cheeks. Then, I thought long and hard about the next steps with the suburban.