yes. i'd really like to know how to check for this leak.
i've changed my wires and plugs less than 10k miles when i got a P303 error. I had a wire that was bad when i changed it last. I'm getting the P303 check engine light again. i've tried swapping the wires, plugs and coil positions to see...
its looks real nice in blue when you change them out. but make sure your connection is good. mine are often off due to a bad connection so i can't see how fast i'm going at night/.