SloopJohnB@mac.com

I'll be darned if I can see where it's going. When car comes in from the road it leaks on the floor...
Pressure tested to 20psi and it goes down, but no coolant leaks on the floor.
With pressure tester on and 20psi and engine idling, pressure goes up to 25 or so….makes me think it's a head gasket leak.

So….it's off to test with combustion leak tester….

A6problems

Take the cover off the bottom and look for leaks. Any oil in the coolant tank?

SloopJohnB@mac.com

Did that, little bit of coolant drip on the auto trans line but not enough to tell where it's coming from up top.

I can't see if it's coming from the 4.2V8 valley..I know there's a pipe from back to front with a #$%@ O-ring that can fail.

No oil in the expansion tank.