Highly accurate pressure sensors with long-term stability are necessary for fuel efficiency and reduction of harmful emissions. Increasingly demanding requirements of piezoresistive sensors ...

The above pressure test, while valid, only verified the fuel system s ability to deliver fuel under low-demand conditions.

If fuel and/or air filter replacement doesn’t do the trick, diagnostic tests will be needed to check fuel pressure and volume, as well as exhaust system backpressure.

5.Pressure Regulator-sensor.The regulator is normally fitted to the HPP and the sensor fitted to the rail.If either of these are faulty you will get hard starting 6.Cam/crank sensors.Check that they ...

Instead of a mechanical fuel pressure regulator, Ford employs a fuel pressure sensor and a fuel pump driver module, the latter of which varies voltage to the fuel pump, keeping pressure just right.