replaced CP sensor with Beck-Arnley part ($26, thanx rockauto)
pretty sure the problem is still there after this morning's drive.
took the oil filler cap off, no smoke or vapor at idle(but it pulses air ?), when I get a helper to rev the engine, I'll try that test again.
still no CEL.
kinda wondering if the dealer has a way to test the coils and injectors and how much they charge to check valve lash.