1.8EG-T

How do you tell if the thing is actually working? The normal buzz sound, or should this thing vibrate quite a bit? I hear a soft buzz from it. Still having probs. checked all vac lines with wd40 for leaks with noluck, even checked the piping for leaks.
Here is the link for the symptoms, running out of options, and there is no shop around to take it to, or I would not hesitate to do so. It just stumbles until it dies at idle. https://honda-tech.com/zerothread?id=112724