Hello SeanBuller,
problem is i don't have a conversion table from Porsche DTCs to OBD2 for the ECU.
This website lists the error P0012 as: A Camshaft Position (CMP) Timing Over - Retarded (Bank 1)
P0012 OBD-II Fault Code, Camshaft Position - Porsche
There is a Porsche DTC 112 that says hall effect sensor 1. But that doesn't make sense, because if the hall sensor didn't work, the engine didn't run the way it does.
If somebody has a conversion table for OBDII to Porsche DTC and the 7.2 Motronic maybe i can help with the Porsche DTC part.
Important part before you change sparks is to turn over the engine without sparks, this way you get all oil out if the cylinders.
My problem is the hard knocking noise in the video starting at 00:20. That doesn't sound good. Can you locate where it is / was coming from? Sounds like a valve banging on a piston.
Regards, Markus
EDIT:
If all cylinders have 210 psi – good value, maybe a bit too high.
Noise could be caused by a not properly working hydro.
Don't think it's a solenoid problem of the camshaft adjuster.
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