I did the "pull each wire off the distributor" trick and cylinders 2 and 5 did not register any rpm drop. There is no noticable smoke of any color coming from the exhaust at low idle and I'm not losing a significant amount of oil or water. I plan on running a compression test once I pick up a tester and there is spark but I'll probably buy new plugs just in case, but I'm just wondering whats everyone's experience on injectors failing? Basically, how likely is it that 2 injectors or the wiring to them have failed? The car has about 120k miles and is of course a 91 L98.