Hi All
Got an omega 2.6 that came in with mutiple cylinder misfire codes cyls 4.5.6.n/s
inspected and found water ingress/damage to ns bank coil pack/plugs....replaced.
still got erratic idle/misfire....emissions test 4% oxygen and sensor locked lean
removed intake and inlet manifold to inspect plastic base plate seals..all look ok.
we are currently fitting a seal kit at moment
will report emissions this afternoon.

Any other pointers/common issues please

simon