Losing Coolant

Asked by Feb 02, 2014 at 09:23 AM about the 2006 Hyundai Tucson GLS 4WD

Question type: Maintenance & Repair

2006 Tucson 80 K miles. Was losing coolant. Had local mechanic check out  dealer,
Dealer said engine OK, Need Hoses replaced. Replaced Hoses, But care is still losing
some small amount of coolant even if car is not running. Does anyone have any ideas?

4 Answers

123,985

Do a pressure test on the cooling system. This will allow you to find the leak on a cold engine. Sometimes a small inspection mirror helps to look in the tight places. I would start with looking around the water pump. If you find any signs of coolant leaking out weep hole even if it's dried old coolant replace the water pump cause it is about to fail you. Hope this helps

2 people found this helpful.

Thanks. My mechanic did. He saw no leaks. So I went to dealer and they said engine was fine and it was the hoses which were old/original. However the problem still exists.

3 people found this helpful.
123,985

I found this info concerning your model vehicle. "Watch for coolant leaks from the radiator, where the metal fins meet the plastic “tanks” on either side. " --- http://www.autofocus.ca/cars/hyundai/2006-hyundai- tucson/2006-hyundai-tucson-4dr-gls-4wd-27l-auto/reviews/reliability- report

4 people found this helpful.
10

The most common cause of "mysterious" coolant loss is the radiator cap. Most times the cap seal is cracked or worn and coolant is lost through it as evaporation. Another possibility that won't show up when pressure testing the radiator is leakage from the overflow reservoir.

1 people found this helpful.

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