Just wondering if anyone else has had problems with weak or collapsed lifters. I had 500miles on my new 08 this past friday when we took it up to Knoebles Grove in Elysburg, PA. Up until then, the thing ran as quiet as a Lexus. And at 500miles, I figured I was past the main break in stage, so I figured it would be ok to start working the jeep a little harder(owners manual recommends 300miles). Well, anyone from around this area and has been up to Elysburg, knows what the hills are like around there. I had one hill I climbed that I was in 2nd gear the whole way up, so it did get worked pretty hard. Anyways, we pulled in the parking lot, and I noticed a ticking coming from the engine, specifically the left, rear corner. Well, its been doing this ever since and I have 700miles on it now. It only starts ticking once I'm up to operating temperature. Its fine in the morning when the thing is cold yet. Had my gf's dad whose a experienced mechanic listen to it and he agrees with me, it sounds like its got a weak lifter in it thats not pumping up all the way. Thing runs great, and I got 16.5mpg with it on the way up there and back, which I figured was pretty good for a "green" engine yet and all those hills.
My only worry is that I already changed oil in it and I'm afraid the dealer will give me grief. I used Pennzoil Platinum 5w-20 and a Purolator Pure One filter. I guess I'm just kinda old school, I still believe in change oil after a few hundred miles to get all the crud out from engine break in. It was making noise before I changed oil in it however. I'm just overly paranoid cause my last jeep gave me nothing but problems and I wound up having to lemon law that one.
SOLD-08 Unlimited X, "jeep green", auto, limited slip, hushpower muffler, Aerotech Interceptor gauge,Powerstroke tranny cooler, skidrow evap skid, AFE Pro 7 filter, Teraflex leveling kit, EVO control arm skids, 15x8 Black Rock 909's, 33" KM2's