Two days ago I noticed that my car was having trouble turning over. When I would attempt to start the car, the lights would flicker on the dash and I would hear the car trying to rev but never actually turning all the way over. A second or third try would finally get things going.
Finally, today, I couldn't get the car to turn over at all. I have uploaded a video for you to see what's happening https://youtu.be/g3jeK97n530
There is a known problem with the fuel pump in the vehicle - the car sometimes takes several tries to build fuel pressure before it will start. My mechanic believes its the check valve failing on the pump - but the starting symptoms were different with this problem. The lights would not flicker and the car would have no trouble attempting to turn over.
Could this be a battery issue?
EDIT I took the battery out and got it tested. It was drained but otherwise fine. The positive terminal post had a lot of blue corrosion around it which I cleaned off and the clamp had a piece cracked off of it as shown in this pic: http://imgur.com/a/u4yrU.
I cleaned the battery posts and terminal clamps with a scrubbing tool and tightened the clamps back on the now fully recharged battery. The car started up pretty immediately the first time, but each following time does the same thing with flickering lights and no turn over (as shown in this video: https://youtu.be/tACCd4GYxjQ). Could the cracked terminal clamp be the problem?