do fuels injector cleaners really work and what is the best brand.

 

I think Techron is the best. Now there is Techron Plus which I have not tried yet.

 

Chevron Techron. I would pull the rail, and soak the injectors in a sonic bath of seafoam. You can get a sonic jewlery cleaner from wal mart and use that. Make sure if you go that route that you get new o rings and apply some petrolem jelly to them when you reinstall em.