Sergio, I chased a problem like yours for a long time until I had the
head pressure tested and found it was cracked. Basically the crack was
hairline and caused a problem when the head reached normal temp.
A new head solved the problem!
Good Luck!
Tony Leeming
63 SeriesII Alpine
69 MGB GT
This archive was generated by hypermail 2b30 : Tue Sep 05 2000 - 09:26:56 CDT