I have an 03 Montero with a 3.8L V6. At 60K miles, I had the timing belt replaced. The water pump was replaced as well as the coolant. Over the last 3000 miles, I've smelt more and more coolant. The indep. shop that did the work kept the car for 6 days without finding the cause. Now I've pulled the cover under the engine and coolant is coming from the right side of the engine and dripping off the oil filter. I've looked with a flashlight as well as a mirror and I can't trace it. Are there any coolant passages that have to be reassemled under the timing belt? It doesn't appear to be coming from the hoses. Anyone have a good idea where to look? Thanks.

 

Either the water pump is leaking or there is a oring on a tub that plugs into the back of the pump. most of the time that will fill up the valley between the heads and leak down the back of the engine.

 

Thanks...I believe you nailed it.