Hi guys,
I've got a 2000 Xterra that has been idling rough and just isn't real peppy when accelerating. Also, I can hear a rattle from the engine compartment when I punch it. I took it to the mechanic the other day and he asked if I had had the plugs and wires replaced, the timing belt changed, etc. Both yes(timing belt about 8mos ago).
After he took a look at it he told me that the timing belt was off a tooth and that the 'manual' tells you it should be set on one tooth but the manual is off by one tooth. He said he'd seen it before. He said the guy who did it before must not have known the book was off on the Xterra. I can't recall which manual he was referring to but, he showed me a bolt that was adjusted all the way north of the pressure groove that was left from the original placement of the bolt when the timing I assume was correct. It sounded like he knew what he was talking about, I just wonder has anyone else seen any issues with the repair manual being off a tooth on a timing belt change for the 2000 X? Is this a common occurrence? Also, the truck was new to me when I got it and had always driven this way. I just figured that was how Xterra's ran....

Any help would be appreciated...
Thanks!