SHO Boom

[Maengelito]

scotty's right. just make sure the easy stuff is good first, like spark plugs, plug wires are tight and secure on both the plug and the dizzy cap, etc. if its an injector, wouldnt you be throwing a CEL for engine misfire or something? you could try switching the injector with one from the front and then seeing if the noise comes from the front if it happens again. these things should take long and can really help narrow things down if it doesnt solve them.