Evaporator Leak Verification in a W124
 

Hello,

I have an AC leak in my W124. I put some die in with a charge and can't find a leak. I know the evaporator is a big problem in the W125s. How do I verify it without tearing the dash off? Should I be able to see a leak if I take the blower motor cover off? Are there condensate drains that would have oil or die leaking out of them?

Thanks,
Jay

It's unlikely you will see dye when pulling the blower motor. Portions of the evap can be inspected, but not everything. The most likely leak locations - solder points between the many copper elbows and the aluminum core - are not visible.

I suggest looking at the condensate. Wait until the performance of the system degrades, then take a look. You need enough dye to leak out to be detectable.

- JimY

Not necessarily. See link

http://www.peachparts.com/shopforum/showthread.php?t=152840&highlight=dye