Coolant reservoir is leaking from the bottom

BETHANY_NASH40965

MEMBER
2005 CHEVROLET EQUINOX
6 CYL
2WD
AUTOMATIC
139,000 MILES

Coolant reservoir is leaking from the bottom of it, did not see any holes in the tank or the hoses. When I take the cap off it leaks and when I start the car it leaks.

Friday, August 17th, 2018 AT 3:13 PM

5 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good afternoon.

Did the car overheat?

You may have a bad cap. Check and see if the rubber is damaged in the cap.

Does the tank leak with the cap on?

Is this where it is leaking?

Roy

https://www.2carpros.com/articles/coolant-reservoir-replacement

https://www.2carpros.com/articles/radiator-pressure-test

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Friday, August 17th, 2018 AT 3:52 PM

BETHANY_NASH40965

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3 POSTS

It leaks with the cap on also but not bad as when the cap is off or the car started. It did get hot when it started leaking suddenly. I think it may be coming from the square looking hole that is in the bottom of the tank, but not completely sure.

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+1

Friday, August 17th, 2018 AT 4:00 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

I would start with a radiator cap. Beyond that you will need to do a pressure test to find the exact failure.

Roy

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Friday, August 17th, 2018 AT 4:04 PM

BETHANY_NASH40965

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3 POSTS

I got a new cap and put it on and it is still leaking when I start the car. The coolant in it that was left overnight was still in the tank this morning.

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Saturday, August 18th, 2018 AT 9:15 AM

ASEMASTER6371