Going Lean

[RenoF250]

Any issue with unplugging the injectors individually while it is running and see if the problem goes away?

[RenoF250]

Well I have tried a thousand other things to no avail. Could this be caused by bad caps in the PCM? The symptoms I read about are no CEL and no fuel pump turn on. Also, my caps looks okay but I am running out of ideas.

[cruiser54]

You replaced the pre-pump filter.

What about the one on the driver's side frame rail?

Do you have one?

I would disconnect the fuel feed hose at the fuel rail and the hose from the pump and blow back through with compressed air.

If you have a filter in the line, disconnect it's outlet before blowing through.

You coulda sucked some crap up into the lines, like a rust flake.

[RenoF250]

You replaced the pre-pump filter.

What about the one on the driver's side frame rail?

Do you have one?

I would disconnect the fuel feed hose at the fuel rail and the hose from the pump and blow back through with compressed air.

If you have a filter in the line, disconnect it's outlet before blowing through.

You coulda sucked some crap up into the lines, like a rust flake.

I took the pre-pump filter out completely and ran it from a gas can - no joy. Then got a new pump and connected into the line at the back, same problem. Then took the new pump with just 3' of hose on the end, put the end in the can, ran it no bubbles, lots of nice clean fuel. Connected it directly to the fuel rail, same problem. Apparently it is not an issue with fuel to the rail.

I pulled the IAC just because it was the only thing I have not looked at and it was extended out over 1/2" and doesn't/won't move. So I take it that is bad but I doubt that is the problem.