Check your rear heater core under the seat.  Remove the shield over
it, turn it on, and sniff around.  As a last resort you can bypass the
core alltogether.

2009/11/3, Andy Morse <andysings@aol.com>:
> 86 Syncro. When I turn on the rear heater I get a strong anti freeze smell,
> even fogs up a bit. I don't bother with that one anymore. Now that I've
> replaced the front heater motor I'm getting a very slight sweet smell in the
> front.. What's up?
>
> I do have a a drip of anti freeze at #3 cylinder head. My heater core was in
> great shape in the front.
>
> Thank you,
>         Andy
>

-- 
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Chris S.
Disclaimer: "Death and serious injury may occur"