slight hesitation

[Afredo]

Leaks in valve cover can affect your idle big time.

idle isn't the problem, my idle is fine. the issues are if i hit the throttle quickly, it bogs down and then catches back up again quickly, sometimes it'll cause me to stall out if i'm pulling away from a light or something. and also there's a slight hesitation in acceleration between 2 and 3k RPM.

[dnguyen1963]

If you think about it, when revving an engine you can create quite a bit of suction; therefore, any vacuum leaks would cause the engine to bog down and stall. Rule # 1 - find any vacuum leak and fix it right away before you do anything else. If you follow this rule you will save yourself much headache.