My 94 GT has occasional issues on #6, car has a horrible miss and running a cly bal test always comes up cyl 6 is dead. I replaced the injector and it went away for a week or so but then returned. I checked the connector and all is good. Just out of pure frustration one day I hit the fuel rail with an extention and I'll be damned it started working.

About a two weeks ago it did it again and I borrowed a open end wrench and tapped on the rail and at first it didn't help but about 1/2 mile down the road it cleared up. I figure there must be some junk in the rail so I got some injector cleaner and ran a whole tank of gas out with no issues. Sat night we are at the spot and sob starts it again. This time no amount of tapping or cussing is fixing it.

Seems like fuel rail issue to me. Can it be cleaned or am I better offf replacing the rail?