In Reply to: E34 535i: Coolant leak from rear of head...gasket? posted by Brock Fraser on March 31, 2000 at 20:41:52:
Sorry to hear of your problem. Your diagnosis regarding the had gasket may be correct but can you recall any particular incident that may have caused either the initial slow leak or the sudden spew now?
Grasping at straws here, in the hope that you can avoid a head pull - is the coolant reservoir by any chance the culprit? The plastic can age and become brittle at either the overflow or output hose bib. Trace them carefully (a pain as it is tight in there) but it may be worth it. The overflow does run out to the right side so there's a slim possibility there.
You stated that you "watched where the leak
came from once it got back up to temp"; does that mean nothing leaks when the engine is cool? A head gasket would leak at all times.
Keep those fingers crossed!