I am curious as to when it is optimal time to have an engine rebuild done or maybe it is case by case? I currently have 240k miles on my V6. I've always had the complaint that the 4runner just feels tired and weak. Riding trails going over the smallest obstacles like rocks or little lips I have to floor it and just feel like I barely make it over. Even going up a curb feels like work. Going in sand I'm flooring it just to stay barely moving while I see other 4runners and jeeps moving really good through the same terrain.

Not sure if its a compression issue or something else. Does anyone recommend a good shop in Las Vegas or southern Utah to get work like that done?