Only one other thing comes to mind, and that you did check. Cylinder Compression. Which could indicate a Blown Head Gasket.
Check your Oil - Does it look like Milk Chocolate? If so good indication of blown head gasket.
Check for Oil in Coolant - another good indicator.
Check out link below for how to check compression
Sorry go to get to bed have to work EMS in am. Hope this has helped some anyway.
Wednesday, February 2nd, 2011 AT 4:22 AM