Sounds like an air lock in the system, take a heater hose off and back fill the heater core with clean water, re fit hose but do not tighten clamp, run engine and move hose a little so coolant can escape you may knock out the air as well, when you feel both heater hoses warming up tighten all clamps and continue with bleeding the system as normal.
SPONSORED LINKS
Wednesday, January 22nd, 2014 AT 2:19 PM