Hi MJ, thanks for the reply.
I have done the compression test on all 8 cylinders one after the other so there has been plenty of time for oil pressure to build. I did about 10 cycles for each cylinder.
If the chain sprocket was out by one tooth would it throw a fault? It all looks OK but with all bank 1 cylinders the same it is clearly a common fault to that bank.
The only thing I can think of to progress this at the moment is to do a leak down test with each cylinder at TDC. I guess I could do a smoke test at the spark plug with the cylinder at TDC, see if any smoke escapes via the inlet ports or through the exhaust.
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Audi S8 D2 2002 88k mls
Ebony pearl effect black. Grey interior.
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