I have a coolant leak on my Chevy, most likely from the pump gasket. Which would be the better stop gap fix, GM cooling system sealing tablets/ Bar's Leak equivalent tablets, or the powdered aluminum type stuff?
Which stop leak additive
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i like the gm tabs
It's pretty much the same thing. I like the bars leaks liquid aluminum seal.
Use the tabs and not the big bottle of too.
Yep the GM tabs are the best bet. If it doesn't work you gotta repair.
JHZR2
Staff member
A repair is the best additive.
It would be rare for the WP gasket to leak, did you check the vent hole underneath the pump?
Stop leak isn't fixing this if it is, a new pump is the only repair.
Stop leak isn't fixing this if it is, a new pump is the only repair.
Just fix the [censored] leak. I hate stop leak with a passion. Gaskets aren't that hard to do.
Is this the truck in your sig? Should be cake.
Is this the truck in your sig? Should be cake.
Originally Posted By: Trav
It would be rare for the WP gasket to leak, did you check the vent hole underneath the pump? Stop leak isn't fixing this if it is, a new pump is the only repair.
I thought that was called a "weep hole" for when the bladder ruptures. Water pumps supposedly have a bladder in there somewhere - for some reason.
It would be rare for the WP gasket to leak, did you check the vent hole underneath the pump? Stop leak isn't fixing this if it is, a new pump is the only repair.
I thought that was called a "weep hole" for when the bladder ruptures. Water pumps supposedly have a bladder in there somewhere - for some reason.
Originally Posted By: SnowDrifter
Just fix the [censored] leak. I hate stop leak with a passion. Gaskets aren't that hard to do.
Is this the truck in your sig? Should be cake.
Now you've done it! I got cake and ice cream on my brain now.
Just fix the [censored] leak. I hate stop leak with a passion. Gaskets aren't that hard to do.
Is this the truck in your sig? Should be cake.
Now you've done it! I got cake and ice cream on my brain now.
Haha fat kit at heart just like myself
I would stay clear of stop leak since it will plug up the heater core and possibly the radiator.If a thin pump gasket appears to be leaking that bad, I would repair. May even be a longer pump bolt which enters the coolant passage.If that is the case, some permatex 2 might do the trick.
Originally Posted By: Merkava_4
Originally Posted By: Trav
It would be rare for the WP gasket to leak, did you check the vent hole underneath the pump? Stop leak isn't fixing this if it is, a new pump is the only repair.
I thought that was called a "weep hole" for when the bladder ruptures. Water pumps supposedly have a bladder in there somewhere - for some reason.
Could well be i don't know. I have heard it called tropfloch, entlüftungsöffnung, drip hole, weep hole, vent hole. No matter its the hole in the pump housing and when the internal pump seal fails its going to drip.
Quote:
The vent allows atmospheric pressure into the pump and the seal remains seated.
Originally Posted By: Trav
It would be rare for the WP gasket to leak, did you check the vent hole underneath the pump? Stop leak isn't fixing this if it is, a new pump is the only repair.
I thought that was called a "weep hole" for when the bladder ruptures. Water pumps supposedly have a bladder in there somewhere - for some reason.
Could well be i don't know. I have heard it called tropfloch, entlüftungsöffnung, drip hole, weep hole, vent hole. No matter its the hole in the pump housing and when the internal pump seal fails its going to drip.
Quote:
The vent allows atmospheric pressure into the pump and the seal remains seated.
Originally Posted By: 901Memphis
Yep the GM tabs are the best bet. If it doesn't work you gotta repair.
+1
Yep the GM tabs are the best bet. If it doesn't work you gotta repair.
+1
GM, Ford, and Chrysler tablets are all made by Barr's and are the same formula as Barr's. They are excellent.
Originally Posted By: Warstud
I've always called it a entlüftungsöffnung.
Thanks! I just spit beer all over my computer monitor!
Seriously though, If you have a seal leaking on the water pump, none of the stop leak additives are going to help. It is a lip seal with a shaft that rotates in it, the stop leak isn't able to cling to the leaking area to seal the leak.
If you had a small leak in a radiator , heater core, or external head gasket leak, A product like Bars or the Gm stop leak might work for a while.
I've always called it a entlüftungsöffnung.
Thanks! I just spit beer all over my computer monitor!
Seriously though, If you have a seal leaking on the water pump, none of the stop leak additives are going to help. It is a lip seal with a shaft that rotates in it, the stop leak isn't able to cling to the leaking area to seal the leak.
If you had a small leak in a radiator , heater core, or external head gasket leak, A product like Bars or the Gm stop leak might work for a while.
The GM and the Bars Leak Powder are one in the same.
I also had a gasket leak years ago and the seal tabs helped. I made sure that when that waterpump was replaced I used the plastic felpro gasket. It's been in for ~70k and it's clean as a whistle.
I also had a gasket leak years ago and the seal tabs helped. I made sure that when that waterpump was replaced I used the plastic felpro gasket. It's been in for ~70k and it's clean as a whistle.
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