anyone know what toy machine guns sound like?....cause it sounds like i have one in my engine bay....it only does it when the rpms go up...cant really hear it that well at idle...i popped the hood and it sounds like it coming from the back-passenger side...any ideas? its been a while since i have changed the wires and plugs...i was reading some posts and people said that solved the problem. and i have been noticing problems with power and acceleration..any other ideas...hoping its not a spun bearing..thanks
