Thanks Ferdman. While I was testing compression, I attached my compressor to the engine compression line and ran it up to 120psi. While attached I hand cranked the engine over to see if any bubbles were coming into the expansion tank. Nothing on all four cyliders.

The new cap and thermostat are on. Im waiting on a new belt tensioner assembly to get here hopefully tomorrow. So I took the opportunity to remove the valve cover to check the timing marks on the cam sprockets. Lined up perfectly TDC. (Im having an idle issue and a coolant loss issue).

Ill put everything back together when the parts get here and well see.

Thanks for the input. At least I know I dont have to pull the head and I have good, even compression across the board.