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I posted the original thread. I have since noticed a ticking when the engine is at about 3000rpm with a load on it. I'm at my whits end with the car. I've already tried the filter change and already run synthetic oil. I'm really starting to think that the car is a lemon.

I have an 05 Ls With 3.9l and 46'000 miles on it. The problem I have is the engine making a very loud ticking noise at start up. It sounds like lifter or valve noise. It does it after the car has set for a couple hours warm or not. The thing is it does not do it every start. I have taken it...