4 weeks post abdominal liposuction,and have had diarrhea as soon as I eat for the past two weeks everyday. Is that normal?

This is not a complication of your procedure I suggest seeing a GI specialist to ensure you have no internal issues.  Best, Dr. Emer.

 If your surgeon prescribed antibiotics after liposuction this could cause diarrhea. You should report this to your surgeon.

Sometimes patients that are given antibiotics can get diarrhea. You  may need to see your internist or a GI doctor to make sure the everything is ok.

No it is not normal.As others suggested if you were on antibiotics that can cause it and may need treatment to correct.I would consult both your surgeon and internist to rule out c.diff and other potential causes.