I bought my 1993 Z28 3 months ago the guy said the plugs weren't very old so the other day I decided to check them 1 at a time I did not bad when I got to the plug closest to the drivers seat I took it out be hand it was crusted over black so I cleaned it check the wire for dirt put it back in it has the msd opti-spark system the blaster was crusted over good cleaned it now I smell gas bad and when I go to pass at 55 mph it smells like the only way to explain it is kerasean eny input would help

 

probly a good idea to change plugs and look the plug wires over for damage. flash for codes and let us know if any come up, number 23 on the list 4th Gen LT1 F-Body Tech Aids