ok so we changed the fuel filter, spark plugs & wires,& fuel pressure regulator and our truck still isn't running right..its like when it gets really hot it starts to spit and sputter..We done took it somewhere and had them put it on some kinda machine and nothing came up..It use start right up until we changed the fuel pressure regulator and now it doesn't do it ..dont know how to describe what it is doing..If anyone knows what could be going on with it please let me know
Thanks
Thanks