What you have to do, is replace the heater core itself
To connect PEX tubing to a water heater, you can use a fitting called a PEX fitting. This fitting is designed to connect the PEX tubing to the water heater securely. Simply insert the PEX tubing into the fitting and use a crimping tool to secure it in place. Make sure to follow the manufacturer's instructions for the specific type of PEX fitting you are using.
"Does the top or bottom heater hose from the firewall go to the water pump on a 1991 Dodge Dakota V6?" The top heater hose from the firewall goes to the water pump and the bottom hose from the firewall goes to the top of the block where the temperature thermostat housing is located.
To connect PEX tubing to a hot water heater, you will need to use a fitting called a PEX fitting. This fitting can be crimped onto the PEX tubing using a crimping tool. Make sure to follow the manufacturer's instructions for the specific type of PEX fitting you are using. Once the fitting is securely attached to the tubing, you can then connect it to the hot water heater using the appropriate connectors. Be sure to check for any leaks before turning on the hot water heater.
Dielectric union
Heater core? Inlet or outlet hose fitting at heater core?
To hook up a heater hose to a 305 engine block, first locate the heater hose fittings on the engine, typically found near the intake manifold or water pump. Attach one end of the heater hose to the fitting on the engine block, ensuring a snug fit, and secure it with a hose clamp. Connect the other end of the hose to the heater core fitting in the firewall, again using a clamp for security. Make sure to check for leaks after the connection is complete.
its the heater core. but its not clogged. its cracked
The necessary steps for hot water heater expansion tank installation are as follows: Turn off the power and water supply to the water heater. Drain the water from the water heater. Locate the cold water supply line and install a tee fitting. Connect the expansion tank to the tee fitting. Secure the expansion tank in place. Turn the water supply back on and check for leaks. Turn the power back on and test the water heater.
Arrow points toward the heater core,left I believe. FYI , when mine broke I replaced it with a barbed fitting $.59 and my heat works fine.
It matters if it has ac or not. If it is a non ac vehicle, the hoses and coolant flow from the fitting close to the thermostat housing to the lower heater core tube, then out the upper heater core tube to the fitting on the water pump. If it has ac, the hose from the upper heater core tube connects to the fitting on the radiator.
The heated coolant from the engine comes out of the fitting nearest the thermostat, then enters the lower heater hose nipple (or the smaller of the two nipples) then the coolant comes out of the heater and returns into the fitting on the water pump. All fittings and hoses attached to the water pump are return lines.
Look at the firewall in the back of your engine compartment. You will see two water hoses come out . Unscrew and pull off both hoses. Get a garden hose and cut off metal fitting. Twist on garden hose on one of the pipes sticking out of the firewall. Run hose water through it for 5 minutes. Then repeat on other pipe .