I noticed today when I started my car up for work it wouldn't fire up, like it was getting no fuel. It sat sat night until mon afternoon. It cranked for a few secs then fired up. Then every time I started it up today it fires up, then drops down below 500 rpm like its not getting fuel for a second like its gonna die then it fires up and runs good. Any suggestions besides fuel filter? I don't think its the pump I replaced that this winter and it you can hear it clicking on when you just turn the key on.