[Langning]

I believe the Cav fuel injector leak is problem of the "bottom-feed" design. On most of other cars with "top-feed" injectors, the fuel rail presses against the injectors and thus creates good seal. Whereas in our 95-97 Cav, the "fuel injector bracket" doesn't really hold the injectors tight and the large rubber O-ring is only thing stopping the fuel from leaking...

My car averaged 33mpg in summer and now I barely top 29.5mpg. Because of the winter fuel formula, I can't tell if my fuel leak is major; but I can see visually the #2 injector head is "wet" (after I replaced #1 & #4). Not wanting to dump $$$ into this car, I will replace the #2 O-ring this weekend (I did bought a set of injector O-rings from dealer for like $25).

I may put RTV sealant around the large O-ring this time. Is this good or bad?