Join Date: Dec 2007
Location: somewhere in the US of A...
2.7 water pump- a lil help please!
I recently tore down my 2000 Intrepid with 89,000 miles and put in some new internal bits, namely crank and bearings (scored and rod knock) new oil pump and water pump. Well, I got the engine back in the car and filled it up with all the fluids cranked it up, and water just flowed like a river from the back of the engine where the flywheel is. Well, I followed the little coolant path back up to the top of the engine, where I found the coolant was coming out of a weep hole like directly behind where the water pump is. Also checked the weep hole beside the thermostat housing, and it was also leaking. I tore the engine back apart and put in another water pump, as I assumed the seal was leaking. Curious to see what was gonna happen before I put it all back together, I blocked off the lower radiator hose and filled the block with some water. No leaks around the gasket, but still coming out of the weep hole in between the heads behind the water pump.
What I'd like to know is what in the heck did I do wrong? There is a backing plate and a gasket. I installed the backing plate first in the block, then the gasket, and then the water pump, with a thin layer of RTV silicone between each of the layers for added insurance. The only difference between the old and the new water pump is the type of gasket; the old one had a rubber o-ring style and the new one uses a paper gasket, no groove on the new water pump for an o-ring gasket. I also tried it without the backing plate, but the impeller was hitting the rear of the block and wouldn't turn properly. I haven't run into this problem since I've been messing with cars, so hopefully someone with a little more experience on this engine has a solution. I'd sure appreciate it!
Last edited by mahatma171; 12-18-2007 at 06:02 PM.
Reason: spelling error