Slunk
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Posts posted by Slunk
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Sounds like to me you're in a jam. You have to at least prove they broke your car if not than you might have to settle for the discount.
2010 2.0T Quartto Misfire
in Audi A4 (B8) Forum
Posted
Hi all, I have a 2010 2.0T quartto that I recently brought from the auction. The seller didn't disclose the misfire so yea, I have me a pretty one my hands. Anyways, the car idles and runs rough and the car CEL codes produced a P0300, P0304, P0302, etc... I did a compression test and the results are cylinders 1-3 gaged at 180 psi and cylinder 4 at 40 psi and the no.4 spark plug did even look like it fired, no carbon marking. I did not do a leak down test because I did not have the kit nor air compressor. I began disassembling the cylinder heads and removed the valve cover and exposed the camshafts. I did notice that under the intake cam both lifters for the cylinder 4 were off and one was off from cylinder 3 ( attached picture below) and were located under the exhaust cam. The exhaust cam looks like it had been grinded down and or sheared. I ordered a replacement exhaust cam. My question is, should I replace the timing drive parts as well? Not sure what cause the lifters to fall off the valves for the intake but could it be a bad timing chain? It doesn't look damaged from what I can see but I have completly taken off the chain or the bottom cover yet. Not sure what to look for even after removal of the chain (sorry, intermiate garage mechanic/car enthusiasts). Also, if it is recommended to replace the timing drive, I would need a timing adjustment as well I assume, correct? Any help you all provide would be greatly appreciated. Thanks.