Author Topic: Coolant leak  (Read 344 times)

Fishes4em

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Coolant leak
« on: December 30, 2018, 10:54:39 AM »
I recently replaced my water pump on a 455. I have a tiny coolant leak on top, where the timing cover meets the block. It is just above the long upper bolt that goes through the water pump and timing cover. Was I supposed to use thread sealant on that bolt ? The leak was not there prior to the water pump install. I am hoping to avoid removing the timing chain cover. Any advise is appreciated. Thank you

Jack

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Re: Coolant leak
« Reply #1 on: December 30, 2018, 03:20:42 PM »
Did you use gasket sealant?




Regards, Jack

Fishes4em

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Re: Coolant leak
« Reply #2 on: December 31, 2018, 08:20:27 AM »
I sealed the gaskets between the water pump, backing plate, and timing cover. My question is should I have used gasket sealer on the four long bolts that go through the water pump and the timing cover into the block? The small coolant leak is between the timing cover and the block above the upper right long bolt.

Fishes4em

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Re: Coolant leak
« Reply #3 on: December 31, 2018, 08:22:34 AM »
Before I did the water pump, there was no coolant leaking in that spot

Gene-73

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Re: Coolant leak
« Reply #4 on: December 31, 2018, 11:41:55 AM »
I believe all water pump bolt holes are inside of the water pump gaskets, so if you properly sealed the gaskets then no additional thread sealant should be needed. If you can find a photo on the Internet of the back side of the pump you used, you can verify.  This should be the same with the timing chain cover.

That said, if you have a leak there then you'll likely have to take the pump and maybe the timing chain cover off and re-seal.
« Last Edit: December 31, 2018, 11:47:03 AM by Gene-73 »
Gene


Re: Coolant leak
« Reply #4 on: December 31, 2018, 11:41:55 AM »

yellow1098

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Re: Coolant leak
« Reply #5 on: January 09, 2019, 11:00:41 PM »
Hi guys I have a leak in the same spot...all across the top of the timing chain cover.....so just to simplify...I have to remove the water pump and timing chain cover and get new gaskets and Rdv against the block? I have electric fans so it's just removing the alternator belts and all should go back together easily? What other complications am I missing?

firebirdparts

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Re: Coolant leak
« Reply #6 on: January 10, 2019, 08:13:16 AM »
The only problem with all that is galvanic corrosion, really.  If the motor's been together 40 years, sometimes the bolts won't come out.
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yellow1098

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Re: Coolant leak
« Reply #7 on: January 10, 2019, 11:29:14 AM »
Thank you! I don't think that will be a problem in that the motor has been apart maybe 5-6 years ago and had a few water pumps put on since then. Fingers crossed it's not to bad

yellow1098

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Re: Coolant leak
« Reply #8 on: January 12, 2019, 10:47:57 AM »
Also....is there a better gasket to use then others? Or will just a normal felpro work?

Re: Coolant leak
« Reply #8 on: January 12, 2019, 10:47:57 AM »
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