BMW N42B18A Engine With Vanos VVT & Valvetronic Variable Valve Lift.
This drove into a garage with misfiring & spluttering. The head was lifted off, some valves and timing chain replaced.
I happened to be there and I heard it start up , run for a few seconds then die. Never to fire again. I turned the key and it was clear that it had no compression. Confirmed with Compression Gauge, 40 Psi in all 4 Cylinders and a Inlet Camshaft Position Sensor Fault. The sensor is fine as you can see in the Capture below.
I have found waveforms from similar 4 Cylinder BMW engines in the Library but none match the exact Engine Code.
Does anyone, either have a known good or advise if my capture is good or bad.