I try to start my car every other day but when I end up skipping a couple of days, my car won't start when I go to start it, I have to try anywhere from 3-6 times for it to start and then after waiting a minute after it is started to let it warm up so I can rev it a little, it sometimes kills out, I have a Ford V-8 292 in there if that helps, also when I get it started and I have it run for a few mins. and I turn the car off and go around back of it and underneath the muffler tips there is a black liquid little puddle. What is this and what can I do to remedy these things? TIA