Rear Heater Core Flush From the Outside

[Calabrio]

I need to flush the rear heater core.

Can I cut into the two rubber hoses were they go through the floor, flush from there, and they reconnect them with a pair of 5/8 fittings?


Doing it that way, would it also enable me to flush out the 18' of heater hose running from the engine to the back of the car too?

 

[TobyU]

You could. Have you considered access from removing the rear plastic trim? Not too hard to pull off. Then you can do it by just removing hoses from core and not cutting anything.

 

[1955moose]

Be careful though pulling a hose off a heater core that's been stuck on there for God knows how long. What can happen is the stuck hose can damage the soft heater core fitting. Then you get a leak at core. If you do it that way like Toby said, spray around hose first, and real carefully pry hose off core.An angled pick works good to break the seal. Push come to shove, you replace core. Way easier than pulling apart heater plenum up front to change that core.

Sent from my N9131 using Tapatalk

 

[stamp11127]

Why not flush the entire rear system from the hose connections in the engine bay?