Hi All,

Quick question about the EGR on my E320 W124 M104 for those more knowledgeable.

I have been chasing down a strange idle and did a smoke test for vac leaks. Only smoke I saw was coming from EGR, which from what I saw online can be normal. I did a vac check on the EGR and noticed a very small vac leak. I pulled to 25mmHG and it was at 22mmHG after 15 minutes. Im guessing it will keep dropping in vac but I had to head to work so couldn't confirm.

Is the small vac leak indicative of a bad EGR? Im thinking I mightve ruined the diaphragm when cleaning it out...

Thanks!

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1995 W124 M104 E320 Wagon. 175k Miles and Counting