[Suzidad]

The saga continues. After fitting a new cylinder head to the GV, the engine light is still on. Seems to run perfectly otherwise. My mechanic is running out of ideas. Diagnostic tool seems to indicate that the oil pressure to the new VVT unit is about a third of what it should be. Any ideas/tricks (other than burn and bury) on possible missing steps on installation greatly appreciated. We have compared new and old cylinder heads side by side and appear identical.