Posted by Pegasus on September 01, 1998 at 16:54:33:
In Reply to: BIG PROB! posted by Craig on August 31, 1998 at 09:58:30:
Craig,
Sounds like something downstream of the thromostat. You stated that it only starts to leak after a few minutes, which leads me to believe that the thermostat is opening and allowing water to go to whatever is leaking.
You stated that it was leaking under the water pump... Are you sure? Could it be a little higher such as is on the thermostat housing? I left a bolt out there once and it would leak like a sieve any time the thermostat opened!
Don't rule out the possibility that the "weep" hole on your water pump is leaking. This indicates a water pump failure. Don't ASSUME that because it's a "new" pump that it's defect-free! I've bought FOUR, (yes the number 4) defective water pumps for my inline 6 before I finally got one that works. It seems like these older units must be reconiditioned alot. NEVER buy a water pump from Autozone, I've had bent fins on 3 that I bought there, the last (good) pump came from Hi-Lo.
Don't worry, doesn't sound like a major problem as you said the engine runs fine. As a confidence check, disconnect the lower radator hose (completely) and make sure water will flow from the radiator cap to the bottom ok (stoppage check).
Good luck and let us know what it is!
Pegasus
: Help My Mav is defunct!. I started losing a lot of water from somewhere under my water pump. I installed a new pump and hoses but it still dumps it. It seems to be ok when I first put the H2O in. I fire it up and then a couple minutes later out it comes. This causes me to belive it's pressure related. There is no water in the oil (indicated by no thick white oil on the dip stick). The motor seems to run fine, it just doesn't hold it's water. Is it possible that something is cracked and when pressure builds up, it expands and leaks? Cracked block :-( ?
: HELPPPPPPPPPPPP.........
: Craig