How to unblock HVAC drain tube??

[Desotocrazy]

Dumb question but I'm getting water on the floor in Delilah from the hvac vents... what's the most thorough way to get to the drain tube to get any/ all gunk blocking it from draining properly? She's a 74 Fury 2 door hardtop in great shape. Any help is appreciated. - Desotocrazy

 

[traintech55]

I have always worked a small diameter wire in it. If it is real bad you may have to remove the tube and clean it out. Just make sure it is water, and not coolant.

 

[Desotocrazy]

No it's definitely water. It'd happen when i had her sitting out of the garage after a rain. Now that i have her stored indoors, no issues. I'm just worried that there's sediment from 40+ years that i need to vacuum out of there vs just looking a hole up in there. Does the tube just pull out..ie press fit?

 

[traintech55]

No it's definitely water. It'd happen when i had her sitting out of the garage after a rain. Now that i have her stored indoors, no issues. I'm just worried that there's sediment from 40+ years that i need to vacuum out of there vs just looking a hole up in there. Does the tube just pull out..ie press fit?

Some are just a tight fit, others are held on with a clamp. I don't remember on yours.

 

[Desotocrazy]

Thank you. I just checked Delilah when i got home tonight... it was a press fit. It's the end supposed to be wide open? Her's was pinched shut somehow. I think maybe that's how it was backing up like it was??

 

[thrashingcows]

I just made an adapter out of some scrap pipe and heater hoses to fit on my shop vac, then hooked that up to the tube and fired it up for a few seconds....pulled all kinds of gunk and debris out of the drain. ;)

 

[traintech55]

Thank you. I just checked Delilah when i got home tonight... it was a press fit. It's the end supposed to be wide open? Her's was pinched shut somehow. I think maybe that's how it was backing up like it was??

They are designed to be pinched at the end. This keeps air from rushing in the car.