Originally Posted by bud-weis
Originally Posted by Stu.H
any way i can check? maybe blasting water through it prior to removal?
anything else it could be?

IIRC there are two pipes running through the bulkhead, one going in and one coming out, when the car is up to running temp these should be very hot to the touch, the same as the pipes from the rad.
take off those pipes at the bulkhead stu get a hose if you have and a jublee clip wack it on then hose it thru await the orange water