Well, I think we may have found the problem. When a manual tensioner is tightened down it acts like like an idler pulley (the other pulley). The spring no longer has any function.John, as to the above quote, I haven't loosened the tensioner 1/2 when I tension it. I just tensioned it with the tensioner tightened down. 1/2 turn looser from what? Full torque down?
When the tensioner bolt is loosened 1/2 turn from fully tightened down, you'll see that the tensioner can remove freely in its slot. This is how the spring can apply it's tension to the belt.
The problem is when you rotate the crank 2 times with the bolt 1/2-turn loose, the belt has the tendency to jump teeth. But it can be done if you rotate slowly. That's a reason I prefer not to work on these cheap designs.
Is that a standard 3/8" drive ratchet about 8" long? As mentioned above the problem may be the tensioning with the bolt tightened down. However, I'd still borrow a free loaner 3/8"-drive 80 lb/ft Autozone torque wrench to tightened down the bolt if possible.I don't have a torque wrench. I tightened the pulleys with my ratchet wrench. Should I get a torque wrench that clicks? Being a woman, I am not that strong, but the bolts seem pretty tight. My neighbor has volunteered to tighten anything down for me that i can't get tight enough. If they aren't torqued down could that cause a slip of the belt. The bolt seems tight on the tensioner when I go to remove the belt and have to loosen it and push it down.
I wouldn't worry about this step at present time. I think the problem may be the tensioning step.The cam does take an effort to turn, and then it will suddenly lurch forward. I will do what you suggested and take the spark plugs out and make sure the cam turns smoothly.
That's the right belt. 250199 is NAPA's numbering system, it is T199. Redo the tensioning step. Use the Gates belt. IME Gates belts hold up quite well over time.The timing belt seems fine. No damage. How do I know if I have the right belt? Napa sold me a Napa belt made by Gates. The model number is 250199. It is slightly shorter than the Mitsiboshi belt.
We are just turning the box upside down and making sure no stones are unturned.I will double check the routing, but it really only goes on one way. I have a picture of how it is supposed to look.