I'm having a weird issue with my car, mainly I first thought it was my charging system so I replaced my battery, starter, and alternator. Now after being able to drive it for awhile, I'm getting a lot more backfire and hesitation in the lower rpms, 1-4K, and now I can't even get it started. I'm trying to rule out things to find the source and I'm curious to know if you guys think its the leading coil pack too. Thanks

 

what is your battery voltage right now? (when you can't start it?)

 

12.6v

 

is it flooding? does it sound like it's trying to start but it wont? andd you should perhaps do a compression check. but checking spark is pretty easy to do.

 

It could be flooded. I've checked for spark before and its weird cause I would get moments where I wont get any, and there are other times when I would get spark. I mainly thought this is due to the battery since the coil packs arn't really prone to failing, or as I'm told from a friend. But I'm wondering if I'm going at it the wrong way and its really the coil pack that's failing and causing my voltage to drop and car to not start.