My son has been trying to keep his ranger going, has put in 3 fuel pumps in 3 years. A few weeks ago when he put another in, the truck did fine for about 1 week, the first thing I noticed was when I put gas in it, I couldn't run it in at a normal speed, had to put it in really slow and it leaked out a small amount under the truck (while filling). About 40 miles later, it was humping down the road, died, and wouldn't restart. I welcome any suggestions. Thanks