1. The cam timing marks are "close", but not exact.
2. If the tensioner is not working properly (if you are hearing that noise, this is probably true), you can't really get even a "close idea" because the marks are correct only if there is tension between the gears. If the tensioner allows the RH gear (on the left side of the car as you look at it from the front) to lean a little clockwise (...



