Gawd, what a PITA this is!
Spent all day cleaning and only got 1 port finished(ish), two part way there, and haven’t even touched the fourth.
Started with a can of valve cleaner from CT, some dental scrapers and Scotchbrite pads. Ran out of valve cleaner pretty quick so grabbed a can of brake cleaner from the cabinet but it was old and had no pressure. So, went for the electrical contact cleaner and found it actually worked better than the valve stuff. Went through two cans of that then ran out.
Called it a day and went to CT to stock up on everything I could find: brake cleaner, fuel injector cleaner, foaming engine degreaser, throttle body cleaner, and 4 more cans of the contact cleaner. I’m hoping to find the magic bullet, but I’ll probably be stuck with another day of scraping and scrubbing.
Apparently, media blasting with walnut shells is the smart way to do this, but I wasn’t about to go buy all the gear. Guess I’m not that smart.
Anyway, here’s what the cleanest pair look like. Not 100%, but way better than before and probably good enough.
![](https://uploads.tapatalk-cdn.com/20180921/35891e151d41ec5c087d831ddeacaaf9.jpg)