Last winter I had that smell of maple syrup from the rear heater, which I
removed and replaced this summer.  Now, I get a really faint smell only when
the front heater is on.  I looked in bentley for a schematic of any heat
exchanger or hoses for the front and couldn't find any.  Looked at Ken's
hose diagram for my 85 1.9L and no hose for a front heat exchanger.  For
those that have had this problem, where might it be coming from, how do I
troubleshoot it, and how to repair?