I have a small leak on the back side of my pressure washer. It hasn’t seemed to change the performance at all and hasn’t gotten any worse since the end of last year. Do you think I just need to re-tape the bolt or replace it?
It might just need tightened a little. Some plugs use o-rings instead of npt threads. I would pull it out, clean it off, wrap some more teflon tape, and reinstall. If it has an o-ring do not use teflon tape and just replace the o-ring.
Try tightening first.