After a careful review of what I had done, I discovered that the EHA that had previously been working fine had suddenly decided to not work as well. It was a lucky break that it decided to fail in my driveway and not as my son was on his way back to college in SoCal. I have a couple of EHA's emergency spares and each of them worked fine. The original one somehow developed an internal contact issue as the engine would not idle with it installed. It doesn't leak at all.

I went ahead and showed my son how to install a replacement EHA and new o-rings that I'll send down with him.

Why it failed during swapping with another EHA is a mystery. Chime in if you have any insight on what that might have happened. Bottom line though, all is well and running again.

Thanks,

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03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio