Hope someone can help me out here. I had the EGR Valveout of my car for cleaning. After I cleaned it all out, I pressed in the EGR and put my thumb over the vaccum line. As the diaphram pulled there seemed to be a tiny leak as it filled back up with air with my thumb on. It wasn't too fast, but enough to see it moving slightly.

My questions is how much of an effect can a vaccum leak like this have on a car and how badly can it affect proper EGR functionality?