chops806

I got a 1984 with a 350 crossfire injection. I just put a new water pump on, but still not getting any water out of the hoses from water pump or intake to feed the heater core. Any suggestions? If its a air issue where can it be bleed from?

gimpsy

Lots of posts on plugged or blocked heater cores. I found by removing the two hoses that go in and hooking up to my hose I was able to flush it out in the reverse direction. Don't run the pressure up too high and have the other hose going into a bucket or something so that you can see what comes out, try this first before doing anything else. Try it both ways until it runs good and clear this took several direction changes on my core.

Art

chops806

Appreciate it

Eliredandblack

I am guessing your car is a 62, since you don’t say. In fairness to our Bubba Cousins, some Corvettes with Factory Air did not have a valve to turn off the hot water, even when the AC was turned on. I know it seems pretty stupid, as the valves in cost about
$ 30 in today’s dollars. I have a 73 with factory air, no way to keep the water running through the heater core, Really Smart. The valve wasn’t to hard to install. My 88 Pontiac FIERO doesn’t have a water shut off valve going to the heater core either. Lucky I was able to Use some Bubba Engineering to completely close the blend door (a plastic part had disintegrated after 30 plus years) to keep the hot air off the AC Coil, it’s not easy to find HVAC FIERO Parts, or even a Pontiac Dealer.