I bought my second Caravan after my first one (2006 3.3 230k) wouldn't stop running, I figured another one would be just as good. Bought it from a dealer with 60k on it and at 75k I started getting a tick that sounded like a lifter. I also noticed that I was going through several quarts of oil between changes and there was no signs of leaks in the driveway. I pulled the valve covers and checked the rockers and none of them were loose. I used some engine flush and changed the oil to synthetic 5-20 and will no change. I've tried Rislone, Seafoam, MMO, and changed the oil again using another flush kit and it's still ticking. I also noticed that putting my finger over the breather tube port made it stop so I replaced the pcv valve but still no change. It's a light/moderate tick that starts about 20 seconds after starting cold and immediately when hot. Next step is to dig in and replace the lifters but I've been reading that others have had no luck after changing the lifters. Any idea of what else to check our what else it could be?

Ok I replaced the lifters and it's still ticking like before. The only things left are cam or crank. I checked the drain pan and no metal is there so I'm thinking cam shafts. Anyone ever had to replace those on a 3.8 before?

Thank you for the information, I'm going to drop the oil pan to at least see up close what the bearings look like. At $40-$50 for all of them it's worth a shot. I'm just hoping it's not in the cam shaft area as that is a little more work getting to.