F150 loss power after few minutes

[falautomation]

Hi friends
I have an F150 2007 with 150 hours use only .
The problem is this ; When I start the motor everything run ok but after some minutes I see that rotation decrease and cannot reach more than 4500rpm anymore .
I already change all filters , clean the VSP , clean all injectors .
My opinion in the electric motor of the fuel pump .What you think ?
Any suggestion will be appreciate.
Thank you

[99yam40]

Monitoring fuel pressures will tell you if there is a problem with pressures and where

[Nautical]

Loss of fuel pressure, possible restriction , pressure regulator, gas tank vent, gas line restriction ? some items to look at. Run on portable tank, measure fuel pressure

[rodbolt17]

stand 5 feet back.
throw wads of cash at it.
or trouble shoot it.