Ok so my car was sitting for a few days when i went to start it up, the start was very weak, engine turned but wouldnt fire...i thought i wasn't getting any spark, but i jumped it wiht my buddies car, the start didn't seem all that more powerful but the car eventually started up slowly and bogged a bit...i let it warm up seemed fine and turned the car off and it started up fine...hasn't done it since, anybody have an idea if this is ignition? Timing? spark plug problems it sure had me stumped

 

Low battery voltage.
Have you battery load tested.

 

Sometimes my car starts real ******* slow when I'm low on gas. Also, it used to start real shitty before I used injector cleaner. Cheers