If you can get it to make the noise whilst idling in the driveway….one easy check you can do.
Pull one plug wire at a time and see if you can make the noise change. This wouldn’t tell you exactly WHAT is wrong, but might help you isolate it to one cylinder.
This test might also tell you absolutely nothing but it’s super quick and easy and you aren’t out anything trying it.
Last edited by JW51; 05/18/2026 2:56 PM.
