I removed and re-installed the water pump on my z28, so that I could install a new opti then I noticed that coolant is just flowing out from the bottom of the water pump. I used new gaskets for the pump, dont know what i did wrong.??

 

is it coming from where the pump mates to the block?
-did you properly torque the pump down?
-did you clean both the pump and block mating surfaces extremely well before reinstalling?
-did you use rtv on the gaskets and if so did you give it enough time to harden?
-did you clean the bolt threads and apply thread sealant to them?

or is it coming from the weep hole on the underside of the pump?
-if so time for a new pump

 

Brass or copper washers under the heads of the bolts help too.

 

I just slaped it back on, I guess there is a lot more to it.
Thanks for the advice, oh almost forgot how much are bolts supposed to be torqed to??

 

Sigh...always look to shoebox first before asking these sorts of questions.

http://shbox.com/ci/fastener_matrix.html

It's 30 lb-ft if you don't want to both looking....

Don't use RTV sealer..it isn't the best choice. Use either the spray copper stuff or the Permatex non hardening form-a-gasket...even when using a gasket. Absolutely use the teflon thread sealing compound on the bolts....they thread right into the water jacket. That's probably where the leak is.

 

i have used permatex ultra black the last couple times and not had an issue with it although from everything i have seen you dont need to use anything besides the gaskets themselves.

i thought i had seen somewhere not to use actual teflon tape that something along the lines of a loc tite thread sealant was preferred? i dunno

 

Got it
1. Bolts torqued to 30 lbs
2. gaskets
3. Perma-Tex
4. Loc tite sealent on the bolts

I did notice that the coolant is spewing from under a bolt on the water pump. Thanks!

 

hows the opti?

 

sorry to thread jack but i just replaced my water pump myself and now i have a oil leak, coming from it or around that area any idea what it can be? someone said something about timing cover or chain or something like that

 

If you just changed the water pump, the only likely place for an oil leak is the seal around the drive shaft for the pump. To replace it you'll have to pull the water pump back off, pry out the old one adn slip the new one on. It's not hard to do.

Good luck

 

^ What he said, but Ive I seen the time timing cover gasket gone leaking after water pump installs one to many times. Good luck

 

ok thanks