Where exactly is the Inlet Heater Hose on the 2003 Lincoln Town Car? I need to back flush the heater core.?

Look at the fire wall. That is the wall between the engine and the inside of the car. Somewhere near the bottom you will see 2 hoses side by side about 5/8ths to 11/16ths thick. Those are your heater hoses. they should be near the bottom center of the fire wall or a little toward the passenger side.

You can follow the heater hoses and you will see two hoses and likely it will be the one from the engine block in the front of the engine on top near the thermostat. Be aware that back flushing is not a good idea. It can loosen things that do not get flushed out and clog things up in other areas. A heater core is less than $45. new. and there not hard to replace. A flush might cause you more problems. Good Luck and GOD Bless

l do not recommend back flushing the heater core - Take it somewhere that can do it. The interior of the heater core can be damaged if the wrong pressure is used. l seen it happen and replacing the heater core is not cheap.

You do not back flush--you flush the old coolent out the radiator and the heater core will drain also. 2003 Lincoln does not need that what you are about to do--wasting time. l been driving 40 years and never did what you are doing.. Who ever is telling you to do that --does not have the common sense of a pickle--OK