I have a F150 2001 6cyl. Other day was doing 75 on freeway and lost all power. After a tow home and a call to my brother, I have some issues Im hoping someone in here can help. I replaced fuel filter, and pump is humming good (was replaced 4 years ago) checked the Inertia Switch and checked all relays, but truck still wont fire. I checked spark first and that's good. Any ideas???

 

Check fuel pressure, spark, and air. One is missing. Once you KNOW which one is absent, then focused diagnostics can be done.

 

Thanks. Spark is good first thing I checked. running to store to get a gauge to check fuel. Air is good also. so I know its a fuel issue, just not sure what. If it had a carb Id be set but not up on injectors.