Hi Scotty I have a 1990 Ford Thunderbird super charged it runs great while cold but when it starts to warm up it starts misfiring and the engine shakes, ive replaced almost everything including the injectors, now ive noticed when i shut it off i can hear popping sounds coming from the driver side cylinder head?? i think it might be the head gasket, what would you say??

do this video to find out if head gasket is going out

Thanks Scotty, I will try this.