I have an 02 lancer OZ with 102,000 miles. The timing belt has never been replaced so I am going to get that done. I went to get a quote for it and they told me I should replace the water pump at the same time because there would be no additional labor cost. He also said that he did not know if I have a hydraulic tensioner but if I did I should replace that also. I was wondering if I actually have one and are they reliable or should it be replaced?