I could really use some help. I have a six month old 350 crate motor in my older jeep. Has been running like a scaulded money since I put it in. Today as I was driving there was a slight hesitation, followed by a light backfire and then loss of power. First thing I checked was for spark. Not getting any fire. Replaced the coil and the module. Checked the power source and it is hot. Still no fire. Turns over just fine, but there isn't any spark getting to the plugs. After replacing the coil and module I'm not sure what else to do or what else it could be.