![]() I progressively drilled mm by mm until I got to 16mm in order to put tap the hole for a slot threaded EZ-LOK insert. I set up a drill to swing down via a coat hanger and level at the drill spot. You could see in the back of the hole where the original bolt hole was centered. I then cleaned up the hogged out hole where the tensioner bolt was. I found a new place by putting out an SOS in Craigslist. I looked for a new place to live as I was no longer allowed to work on my cars at the complex. I found a guy to hog out the bolt around the bolt by eating around the block a bit and then had it towed to our apt complex. I finally found someone to try to extract it and they sheared the extractor off into the bolt.and wanted me to come get the car out of their lot. ![]() I just pushed on the bolt with my finger and it sheared at the block. I read about the bolt shear problem and went out to the car to check it. The bolt was flexing and the pulley was sawing the belt. My Audi ate a belt from a 6 rib to a 3 rib. We are filing a lawsuit against Audi over this issue.Now, the 3.0 on the other hand.is Another story. Since the standard warranty is 50k miles this means that Audi views itself as not liable for these failures. Red line speedworx website which sells upgrade kits to replace the defective part says that typically this failure occurs at 80k miles plus. Audi refuses to acknowledge any fault on this issue. Searching online shows that there are several websites selling replacement timing chain tensioners to replace the defective part that Audi uses on this engine. Audi maintains that this issue is unrelated but the dealer service manager told me that anecdotally she's seen several such failures after piston ring replacement (I have this interaction recorded on video). Audi increased the engine warranty from 4 to 8 years as part of settlement of this class action, but only in respect of failures related to the excessive oil consumption issue. This vehicle had replacement piston rings out of warranty but at no charge to us due to the known excessive oil consumption issue (for which there was a class action lawsuit). Dealer charged $1300 for inspecting the pistons and wants $13,000 for a new engine. The head and pistons were all damaged and the engine was declared unrepairable by the Audi dealer. It appears from information online that the timing chain tensioner in this 2009 b8 2. ![]() Vehicle was towed to the Audi dealer and we were informed it was due to timing chain slip. Subsequent attempts to start the vehicle resulted in it turning over with no apparent firing. On attempting to restart it briefly fired but then died and stalled. Vehicle began to run very rough and started to shake. This failure is also reminiscent of the 2007 class action law suit which prompted Audi to move from a timing belt to the for the same outcome occurring. When speaking to a member of the Audi dealership it was shared that another vehicle is in for the same issue and that they are seeing this occur more and more in their vehicles. Upon the engine light coming on the car was left parked until the day before the service appointment when it was to be dropped off at the service location, at that time, upon starting the vehicle the timing chain tensioner failed and caused the engine to fire out of alignment damaging the engine. The car had been taken in 2x for misfires and was diagnosed as an issue with the spark plugs, it is now clear that this was the timing chain being out of alignment and missed. Below is an article with their assessment of the situation. This has become a common occurrence and is widely reported on 2009 and newer models. The timing chain tensioner failed causing the Audi interference engine to become out of sync resulting in the engine becoming totaled. Upon the engine light coming on the car was left parked until the day before the service appt when it was to be dropped off at the service location, at that time, upon starting the vehicle the timing chain tensioner failed and caused the engine to fire out of alignment damaging the engine. ![]()
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