Watch as John explains the cooling system and some bizarre issues.

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Check the cap and the car radiator, paying attention to the rubber ring seal before looking at the cooling hoses; learn how from our expert car mechanic in this free auto-maintenance video.

Overheating causes serious engine damage. Here are some repairs that keep your engine running cool.

Install a car's new heater core hose after lubing it and position the clamps by connecting each end of the heater hose; learn how from our expert car mechanic in this free auto-maintenance video.

The hard part of installing cold air intake in your vehicle is sliding the snorkel back on the air filter box. Learn how to re-install cold air intake in your car in these free auto repair video instructions.

Mercruiser 5.7 with a persistant cooling problem. Ran the boat with clear hose from the outdrive inlet to the heat exchanger and one on the manifold split. You can see the bubble form as the engine speeds up with massive cavitation or ventilation at planning speed. Traced to a warped water pump base plate most likely due to over torque on the assembly of the pump.

You need to remove engine parts, like electrical connectors, to get access to the heater core hose for repair; learn how from our expert car mechanic in this free auto-maintenance video.

Fill a car with coolant after changing out the heater core hose, using a wrench to aid in replacing the antifreeze; learn how from our expert car mechanic in this free auto-maintenance video.

Drain a car's coolant when attempting to change a heater core hose; learn how from our expert car mechanic in this free auto-maintenance video.