Coolant leak

Asked by Feb 08, 2019 at 07:57 PM about the 1997 Ford F-150 XL 4WD Extended Cab LB

Question type: Maintenance & Repair

My F-150 leaks coolant only
when cooling down I could
park it no leak hour and a
half two hours later it'll start

3 Answers


All metals expand when hot so it's probable it only leaks when it cools down as the metals contract. A bad water pump gasket would do that...heats up and seals, cools off, contracts and leaks.

2 people found this helpful.

Can you determine where the leak is coming from?


Leaks flow down from gravity and back from air blowing from fan. Just have to follow the water. They also make a florescent dye you put in the coolant and a special light to see the dye

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