I have a 99' cherokee, left the lights on, didn't completely kill the battery but enough to not let it start, no big deal. Charged the battery up now it cranks fine, but hard to start, I have to pump the gas pedal to get it to start, after it starts it runs fine. I have no codes, no check engine light. Ran perfectly til this happened. A little history, did a headgasket earlier this year, replaced every cooling part there is on it and new plugs, wires etc. Any thoughts? Thanks.
Charlie