I just bought the car about a year ago. When I first got it, it would only do it some of the time. Recently, (last 3 months) it has gotten worse. I gave it a FULL tune up, with almost no difference. You can rule out any filters, as I have changed them all.

Thinking out loud, I want to say its a vacuum leak. My logic is when you start the car first thing in the am, no vacuum. It has to build up mabey? That would explain the easy starting after the fact. Im totally guessing, but it kinda fits.

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2