I have a 2014 ford flex limited ecoboost AWD and I was cleaning out the intake valves with some walnut shell to rid of the carbon buildup. I had cleaned out the shells to the best of my knowledge and buttoned the intake back up. It cranked once and didn’t start I tried again and it wouldn’t crank. I’ve pored deep creep into the cylinders to loosen the pistons but rarely would they move and it would only be for a couple of seconds. Any ideas for what could be wrong?
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