Just kiddin towards the end of that last post lol .. If that lines leaking it will burry the line and fill that cavity up to just below the head gaskets - that cavity will hold about 1 gallon of coolant before it starts to leach out the back side - It will even throw a little coolant in the plenum , so make sure you clean that out if that lines been compromised..
That hard line (coolant tube) rises up behind the head to the left of the AC vent hole (if you were standing in front of the truck looking at it..) The heater core feed line hose connects directly to it. The return and feed lines plug into the heater core lines towards the top of the firewall - Those hoses have been known to leak as well - it's hard to determine sometimes, a giveaway would be COP #4 being wet on the top. A little water holds on top of the COP and puddles because of the reveal around the perimeter..
First pic is the heater core lines where they plug into the firewall.. Second pic is the tube I modified with the piece of heater hose to stop it from leaking - I cut 3/4 of an inch off the existing line before attaching the heater hose piece and clamps..The pic was taken before I cut the line.
If you look behind the head in the pic you can see part of the groumet that supports the AC vent tube..
Last edited by jbrew; 02-22-2007 at 08:27 PM.