Try the simple stuff first. When you get home after a ride, fans do not run, is it the fan(s) that's faulty, or don't they get current. Is your system able to hold pressure? Buy tool that can check that on both system and cap, should be able to hold pressure 90% for an hour. It's rare that coolant boils at 15 lbs, engine will have melted before almost, but if there's a leak, then it boils. BTW, all my coolant lines are double clamped
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