[jedon]

Thanks TC Skates and Jay11STI, I did take off the intercooler and look around and added more coolant while watching but wasn't able to see where it's coming from. There was a place that was wet and had some leaves and stuff in it, a depression in the block with a sensor, knock sensor maybe? I cleaned it up and kept an eye on it but more did not accumulate.
Do I need to take off the intake manifold to get to more coolant lines?

 

[jedon]

TC Skates, ouch, I hope not, the engine already blew at 44K and I have another 44K on this one.

Thanks Jay11STI, I'll get a pressure test kit.

Thanks slammedsix!

Not too many places for coolant to be leaking on top of the engine like in your picture. You have the coolant crossover pipe has 2 o-rings that like to leak but not to that level. The coolant lines that run to and from the throttle body are pretty notorious for leaking. As mention before your best bet is to pressure test the system with a tester. Sometimes a clamp or hose will not leak just sitting but add maybe 5 psi and it start spewing everywhere. System should be tested to 20psi.

Also when pressure testing the system do it with a cold engine for safety

 

[jedon]

Okay, we got the intake manifold off ( okay mostly not me... ).
My friend tried pressure testing it and it held pretty good, maybe it only leaks when hot?
There is a very wet spot on the drivers side under the manifold, perhaps it's the water crossover pipe gasket?

 

[jedon]

Its hard to tell but it could be the crossover pipe. I would say clean it up real good and try pressure testing again to see what gets wet and starts to leak.

Is it possible to pressure test without putting it all back together ie the intake manifold? Not exactly a trivial task... Thanks!

 

[jedon]

We replaced the o-rings in the crossover pipe and put it back together, so far so good but I need a longer drive test, I pushed it pretty hard for 15 minutes or so and temps were solid and no more leaking.