Just picked up a 2000 Ody a few weeks ago. It has 170,000 miles. Just started getting the egr code and am getting ready to do the manifold cleaning. I have no history on this vehicle so I was wondering if there is any spec on the timing belt? Or would it be smarter to just go ahead and change it along with idler and water pump? And since I'm already there adjust the valves? Really not a ton of money in parts and I would rather take it apart once instead of a couple of times. One more thought, can my local Honda dealer run the vin to see if any factory service was done?