I have a 1991 GMC Suburban 3/4ton with the 350 and factory TBI. mods include Edelbrock TBI intake, Mallory 6 ignition, and an MSD Blaster series replacement coil (the weird 4 pin). a little bit ago when I replaced my intake manifold, we noticed an odd problem when trying to redo the timing. after a failed start attempt, the injectors stayed ON when we stopped cranking and left the key in the run position. it did this twice after several start attempts, and after tracing obvious wires for a short, we noticed it wasnt doing it anymore thinking it related to twisting on the distributor. biiig mistake. now it seems to be doing it after EVERY failed start attempt, and is getting highly annoying. It is both spraying a steady spray, not pulsing (or noticable pulsing anyoo). Also, the coil itself is acting a little funny during this. it is making an annoying buzzing sound, varied tone, that repeats, kind of like a computer error beep. it is a long steady tone followed by a lower short tone, with another lower short tone, to repeat with the long tone. it doesnt appear random, yet it isnt a constant single tone. overall very odd. this happens at the same time as the injectors doing their spray. It SEEMS to me that the computer is sending the injectors and the ignition system a run signal after any failed start, but beyond that I am stumped. any ideas for trouble shooting or any fixes in mind? thanks in advance!