The trend is right there on the middle of the page. Title is 740il tensioner replacement. Look at the second post by Bluebee. He has 2 links. One is for the chain guide job and the other for the tensioner replacement. Also, there are 3 tensioners. One between each camshaft, and the main one (the 15-30min job) that tensions the main chain from the crank to the cams. A shop is going to charge you $1K-2K for the guide job. If you are going to do it yourself you will need the special tools, and its easier with the engine out, So if you break the gasket between the upper sump lower block area(which will happen) you have access to it. Its that, or you have to drop the whole front subframe to gain access to it. I would spend the $60 and take the 15 or so mins to change the main tensioner yourself.
Last edited by JasonSC540ia; 10-06-2012 at 02:12 AM.