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Mad_Max

Dec 9, 2018 09:36 PM

2007 Lucerne: Small amount of coolant leaks from cap

Has anybody had this issue? I'm pretty sure this is not from getting too hot nor too full. I think its from slosh in the tank. The cap has a small spongy "gasket" in it that appears to be soaked with coolant. I've cleaned the tank off quite a few times and noted that the coolant traces appear later. I'm thinking it needs a new cap without the spongy gasket.
https://cimg8.ibsrv.net/gimg/www.gmf...29f5337cb2.jpg
coolant 1
https://cimg6.ibsrv.net/gimg/www.gmf...94d870185b.jpg
coolant 2
https://cimg7.ibsrv.net/gimg/www.gmf...81b1725f00.jpg
coolant 3

CathedralCub

Dec 11, 2018 12:05 AM

11-year-old foam gasket that lives in hundreds of degrees of heat. Probably a bit loose now. I'd say get a new one.

Tech II

Dec 11, 2018 07:50 AM

Agree replace the cap....make sure coolant is not overfilled( check cold).......and stop doing corners at 90mph....:D

CathedralCub

Dec 11, 2018 10:29 PM

Quote:

Originally Posted by Tech II (Post 1629858)

stop doing corners at 90mph....:D

Or upside down. :)

Soft Ride

Dec 12, 2018 04:48 AM

Ya I think I could use a new cap too after all these years on The PA. The tie down ring was missing a long time ago & mine weeps out a bit too.

CathedralCub

Dec 12, 2018 10:17 PM

Quote:

Originally Posted by Soft Ride (Post 1629870)

Ya I think I could use a new cap too after all these years on The PA. The tie down ring was missing a long time ago & mine weeps out a bit too.

I guess I'm lucky, mine's the old-fashioned screw-on kind with the vent on top.

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