just replaced water pump and is leaking!!!!

Could i have gotten a faulty pump or gasket? is an AISIN Water pump from Amazon. came in AISIN packaging and was unopened. TOYOTA logo is scratched off.
Small leak coming from the bottom of the water pump.
What could be the issue? Loose bolt not clamping down on the gasket? Bad Gasket? need RTV?

 

Ugh sorry... That pump is such a pain to install.

I had the same problem because I did a poor job installing a hose clamp. I had to take everything apart to redo it.

Good luck.

 

The problem could be any of the reasons you mentioned, hard to diagnose from just pictures. One thing I can say with certainty though is to never buy any important parts off Amazon, tons of fake parts there. Good luck.

 

Its genuine AISIN stuff, it says toyota on it but its been scratched off, happens all the time. Yeah its a very slow leak but a leak is a leak gotta find time to do it now that im in school.

 

Well as I said before, I wish you good luck fixing the leak, even with the part with the scratched off name.

 

Best tips I can offer because I really want you to be successful and not have to do this job again.

-take it back apart.
-clean surfaces well and make sure no scoring of the mating surfaces.
-install new gasket and a new pump. I by OEM for my truck cuz I drive it to work and my boat cuz no way I’m getting towed to the dock cuz the jungle site. But I use buffed parts all the time on my VW Passat but that is a toy and I have a truck that can tow it home.
(I do not ever recommend RTV unless specified by manufacturer or you have issues with mating surfaces. Ex. during installation the matting surfaces were damaged. Then it’s only needed on the damaged section)
-use loctite medium strength or permatex medium strength thread locker. And torque to factory specifications. This will give good hold and keep vibration form loosening bolts.
-a paint marker can be used or liquid paper to mark what bolts you have torqued so you don’t miss. Take it slow and mark one at a time.

good luck and sorry your having to do the job twice.

 

Thank y'all for the advice ill get to it whenever i have a chance!