Heat problems, replaced blend door actuator, what next?

[Panoga3.3]

I have a 1998 Expedition, the heat is working in the back, but not the front, after reading some post I tore the dash apart and replaced the blend door actuator, before putting everything back together I started up the truck to test it, yet still no heat in the front, rear heat still seems fine, what should I try next?

 

[bedrck46]

check the hoses going into and coming out of the front heater core see if they are hot You could have a blocked core also in the heater hose is a restrictor that may be clogged

 

[Panoga3.3]

1 is hot, the other not so much. What is the easiest way to flush the core, where's the best place to disconnect the hoses to perform the flush?

 

[bedrck46]

might be best to install a flush kit or to disconnect the hoses at the core and use a little water pressure Flush in both directions

 

[rollavvti06]

might be best to install a flush kit or to disconnect the hoses at the core and use a little water pressure Flush in both directions

X2 that's my thoughts