I've been having issues lately with the stang cranking FOREVER before it fires, if it fires at all. It cranks real fast, but it just takes a long time to fire. I have good fuel pressure, but have not checked spark. My battery has been pretty weak lately, and I was wondering if maybe the weak battery might not be supplying enough juice to fire my coil since it's an MSD. Any thoughts on this? Anybody else have problems like this?