2010 mini clubman non-s N12 engine compression test numbers were around 165psi for cylinder #1 and the others were within 10psi of each other... injectors were swapped and misfire did not follow. The VANOS installed in the vehicle are the new design and not clogged, I recently acquired the vehicle with this problem so I don't know it's past. The parts I replaced are ignition coils, spark plugs all mini original dealer parts. I swapped both cam sensors and only one VANOS solonoid with ones from a 2011 mini cooper that runs and drives without faults. I'm only getting P0301 with a generic scanner but with ISTA/D I'm getting cylinder 1 misfire and random cylinder misfire. I've tested VANOS and everything reaches its set points and passes test plans.... no leak down test performed..... if I disconnect any cam sensor or VANOS electrical connector the car hiccups and then runs normal, the engine no longer misfires as viewed from misfire status..... any ideas?
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