Hi guys. If it goes away when you increase engine speed, suspect a hydraulic lash adjuster in the tip of one of the rocker arms. A pin hole can wear in the bottom of it and lets the pressurized oil leak out. I have a 3.0L in my '88 Grand Caravan with over 380,000 miles. It has been doing this for the last 100,000 miles. Let's people in the parking lots know I'm coming!
Saturday, February 12th, 2011 AT 4:49 AM