This truck has been acting up. Started to start hard then wouldn't start at all. Replaced fuel pump and it ran for about a week. Then didnt start. Put another pump in thinking the first was bad since it was after market, started for a day. next day no. Put a filter on and it started and kept starting and running good for two days and now nothing. It has the sfi injection on it and I cannot find where to ckeck the fuel pressure. Also i will tell you this is my dads truck and he only keeps maybe 3-5 gallons in it on a daily basis. now has 1/4 tank. Maybe line froze. i dont know. truck has 140000 on it never been tuned up. But it ran good when you can start it. any help is wonderful.