Now it wont accelerate & wants to die immediately. Once in a while it revs up for a second, then dies. Replaced the fuel filter. It got worse (undriveable) within a day. I shot some gas into the air cleaner & it ran better for about a minute.

What is your question?

at first it acted like it was loading up or not getting fuel about once a day. If I turned it off for a minute, it would run fine again.

What makes this problem better or worse?

Same hot or cold

How long has your 2001 Hyundai XG300 had this problem?

2 weeks