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Replaced AOS, bellow and the rubber tube. It was a real pain given the access space. Also replaced the two boots with the vacuum (?) tubes going in. Old AOS tube had oil as well. Checked the TB and found light misting of oil and cleaned it. The Tb valve is not sticking but good amount of resistance when pushed manually and does spring back well.
Took it for a test drive and the ready status on Durametric showed Pass on 4 out of 5. The one still failing is 'Secondary Air System'. The P0507 code is persistent. Also got P0300 and P0306 'misfire on cylinder 6'. I'm going to swap the coils from 6 to something else and see what happens. Plugs, plug tubes, coil tubes were just replaced so I think shooting at the coil would be right approach right?
What do I do about the P0507? I noticed a high pitched whine noise on acceleration. Might be air being sucked? How do I narrow this to where the leak could be?
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2012 Panamera 4
2010 Boxster
2000 Boxster S 3.2L
1990 Land Rover Defender 6x6
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