This is a new one...

[myk]

Hey guys.  Went out to the car this morning, opened the hood and noticed that the upper radiator hose was pretty much flat in the center.  I opened the radiator cap and the hose straightened out.  The car was cold from sitting overnight.  I've heard of collapsing lower hoses but upper ones?  

Both hoses seem to be in good shape, the cap is new, I have the ECP radiator with a new Milodon water pump.  I can't remember if I swapped out the t-stat though.  I also have an overflow bottle connected with simple hose and worm clamps.  I will say that I think the car is running a little warmer than when I first installed the ECP radiator and Milidon water pump last year.  Ideas, guys?  Thanks in advance...

[cdr]

that can happen with a bad rad cap, are you running a coolant recovery type overflow tank ?  check the overflow hose for plugged up.

[myk]

I'll swap caps and check the recovery tank hose.  Thanks  for the ideas...