so the 4.3 in my 95 s blazer misfired tonite for the first time. it was wierd tho, because it misfired only once when i hit 3000 rpm, then my check engine lite came on and went off as i kept rpms low. to test the rpm idea, i hit 3000 rpm again - sure enough it happened again - same thing. tried it one last time, and again the same result. this was all done on a freeway. when i got to my destination, i put it in park, reved the motor up to 3 grand and it didn't happen. then i had no problems with it at all coming home. any comments? could this be indicative of anything? thanks.