smoking exhaust, fuel mixture way rich and some relay/sensor bad?!?! I just bought an 87 5.0 LX a week ago. When I bought it there was a lot of fuel in the oil and the seller told me it was because the car had sat and due to being flooded trying ot get it started. I changed the oil and was setting the timing yesterday and pulled out the oil dipstick and on a hunch smelled it. It is starting to smell like fuel again. I pulled the plugs and they were covered with carbon so i cleaned them and put them back in. The black smoke out of the exhaust is constant. I have looked around on the net and things seem to point to a leaky fuel injector as the cause of my problem. Any suggestions? I was told black smoke isn't as big of an alarm as white or blue smoke would be.