I looked around the garage and didn't see any hoses that would work so I might take a wine cork and widdle it down and drill out the center and give it a try.

Better yet...as I type this...I might make a pad out of duct tape and poke a small hole in it and try that.

 

I did the duct tape route and it worked. Got a little bit of smoke after start up and then crop dusted the neighborhood as I drove down the street.

Didn't notice any difference between the treatment yesterday and today but, overall there was a defiant improvement in throttle response and engine sounds quieter.

Now back to the misfire, I am going to order the NGKs today.

 

UPDATE

I swapped plugs with cylinders 3 and 4

Did a fair amount of driving this weekend, checked the codes and got a pending misfire on cylinder 3 again. Note, this is a pending code.

So I have ruled out coils, wires, and plugs. I don't want to over think this as I am not noticing any performance issues and the code was a pending code.

Is next steps looking at voltage on injector?

 

UPDATE

I swapped out all Bosch plugs with NGKs gapped at 0.40 and the misfires have not come back

 

The more I read about misfires on this forum, the more apparent it becomes that having NGK plugs gapped correctly and good clean high octane fuel is a quick fix for the issue. Mine had those 4 pronged Bosch plugs and misfires. I did change the o2 sensors as well, but wonder if the new plugs and some good miles at operating temp would have just driven it out of the problem. Glad your issue is behind you.