Hi Guys, My son has a 1995 F150 300 I6. The other night he was driving home and his heat stopped working then the truck over heated. When he opened the hood he said it was leaking from the water pump. So we get him towed home and I pour some water into the radiator and I see the anti-freeze coming out from around the water pump where the gasket is. So my son replaced the water pump and thermastat. FIlled it back up and it appears to be leaking from the lgasket area again. He used rtv with the gasket, it just seems odd that with a brand new water pump and gasket that it would leak like that. Any ideas of what could be going on here? Could he have cracked or warped the head?

Thanks.....

 

Did you let the RTV cure? or did you throw everything together and then start her up?

 

No I think he put it back together and filled it up. How long should it cure for? Also this leaks without it started.

 

No it doesn't have to cure, you don't even need RTV but it's good insurance against leaks. Sounds like the gasket moved out of place while bolting on the pump.

 

Its posible that you did not clean all of the old gasket off the timeing cover and it wont seal and could even crack the new pump when you tighten the bolts I did that on a v 6 not sure where the pump bolts on the I6

 

You can get bad water pumps. Have installed new one that leak worse than the old ones. FUN FUN!