Hey guys, my JK started to leak a lot of coolant a month ago, have not drove it since. It is leaking possibly behind the engine, running down and onto the transmission bell housing. It is quite a lot. I changed the water pump recently and something strange happened. It stopped leaking, I let it run in my garage, drove about 30 mins, then came back and parked it. Five mins later i went back out and the darn thing was leaking again. Could it be something besides the pump? I hear if it is leaking on the driver side like mine is it could be the lower intake gasket. Any thoughts would be appreciated. I also used the dye kit but cannot find it still. Thanks

 

Anyone with informtion?

 

I don't have a 3.8L, but that lower gasket sure seems to be a very common issue on that engine as it ages. If I had to put $5 on it, that would be my bet based on it looks like it's coming down the back of the engine?? Thanks for joining....welcome. Hopefully we can help you out.

@Rednroll - have a thought on this one?

 

That's a LIM gasket leak.

Here's a couple pics I took when my LIM gasket on my 3.8L started to leak. Driver's side.




The symptoms sound about right as well. It won't leak when the engine is cool since the engine contracts and things tend to seal back up. When the engine warms up, things expand and out comes the water/coolant from every tiny gap there is.