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Old 31 Dec 2004, 01:30 am
Ken Abrahamsen
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Default 1987 Accord DX - Clogged Heater Core

Three to four years ago my local mechanic was able to unclog my heater core.
It's become clogged again but my my mechanic has moved... So, I'm thinking
of trying a 'reverse-flush' of the heater core using an adapter hose
connected to my garden hose and reverse flushing it with water. Has anyone
successfully tried this?
Thanks!
Ken


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Old 31 Dec 2004, 07:23 am
Michael Pardee
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Default Re: 1987 Accord DX - Clogged Heater Core

"Ken Abrahamsen" <kabrahamsen@comcast.net> wrote in message
news:me7Bd.47785$k25.41863@attbi_s53...
> Three to four years ago my local mechanic was able to unclog my heater
> core.
> It's become clogged again but my my mechanic has moved... So, I'm thinking
> of trying a 'reverse-flush' of the heater core using an adapter hose
> connected to my garden hose and reverse flushing it with water. Has anyone
> successfully tried this?
> Thanks!
> Ken
>
>

I've done it successfully with other cars, so I don't know why not. I use
duct tape to connect the hose, on the theory that the pressure won't build
up to the point where it could rupture something. Start with the water on
low and build it up as the flow runs clear. Auto parts stores usually carry
"reverse flush kits" that are designed for just this thing, but they don't
concentrate on the heater core. Still, if the core plugged up again there
must be some debris in your system. (Let me guess - in your desperation one
day, you put in a stop-leak. I too have done that. Worse, I used one that
was cellulose based. It looked like I had shredded a section of newspaper in
the cooling system.)

Mike


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