My 2000 S40 is apparently leaking fuel through the exhaust. Any idea what would be the problem or what could cause it?? I noticed it today cause the tip of the exhaust has what looks like black soot. It look liked oil but smelled like gas. checked my oil and it is fine. I dont know what the problem could be. Maybe the cat is bad???



P.S. My apologies if this is posted on the wrong spot I didn't really know where to post this at other then engine internal. Thanks! =)