Don,

Bleed lines burnt through, awhile back I had the same problem on my old mod'd 225 EFI motor, now it's happening again on my mod'd 250 EFI motor .

It's always at the bend in the tubing as it exits the cylinder side of the block on # 1 & 3, what's causing that ????????? It's all new tubing as well. I seems strange that it's happening again on this motor. Both motors were totally set up different from each other.