For the last week or so, my wife’s car has had trouble starting. Specifically, cranking but won’t fire which a few attempts. It was intermittent when it decided to do or not do it, but has now done it the last three times she’s gone to start it. It'll be crank crank crank crank crank give up crank crank crank crank crank try again crank start. The battery is two years old and tests fine. No CEL. Any thoughts?