Got a B16 Swap thats losing a little coolant all the time. There are no visable leaks of any kind. The compression is exc., high and the same on all cylinders. No coolant inside the car and no smell so I do'nt think its the heater core. The bottom plate on the EVAC is rusty and Maybe shows a little wetness?? Question: where's the coolant going? Is it possible for the diaphram in the EVAC to leak and draw coolant into the intake?? Or is it the head gasket and if so..HOW DO YOU CHECK THAT? By pressure checking the coolant system maybe ? Ther are no bubbles or foam visable when looking in the radiator.