There was a bad noise coming from the engine and I assumed I had some type of timing chain problem. After removing the valve cover, I noticed that the plastic guide had been cracked. I have decided to undertake the job of replacing it and all the associated gear. Chain, tensioner and guides I also got a front crank seal. I would like to obtain a good manual. I have a Chilton but it is to vague. Can anyone offer a refferal. thanks in advance Keito