Starts ok, ticks over fine till it gets warm or travels a mile and then it loses power. Can,t cope with any gradient in road. Bangs and pops, Sounds like misfire.
I have replaced fuel injectors, fuel filter, fuel pump, fuel tank, egr valve, pressure regulator on fuel line, throttle position sensor, oxygen sensor, vacuum cannister, coil, ht leads, plugs, distributor cap.
Could not change the map sensor because i have LPG conversion.
I have an oxygen for the exhaust but haven,t replaced yet.
Have no catalytic convertor was removed 10 years ago and has been running fine until now.
While running for an hour perfectly fine did timing and its spot on.
Any one got any ideas. I,m at my witts end.
Cheers
It is a Ford F150 1994 5 litre V8 efi (fuel injected) No Carb

 

You might want to keep in mind the fuel pump is electrically controlled and you could be missing the cause.

The ECM, controls the fuel system so there is plenty of things to check out.

What i suggest is to connect a fuel pressure gauge and set the gauge where you can see it and when the vehicle begins to falter ,see what the gauge is showing.

Can you do this?