Ford F-250 Won't Start?

Ford Will Not Start

On most of such cases the issue is related to faulty or weak fuel pump.
On some cases the fuel pump seems working,but the required fuel pressure is very less.

So mostly the problem is related to fuel pump.
Or else it can be issue with battery,starter or alternator.


Also Check:

Does the check engine light come on when you turn the key on? Does the engine have spark.

Check for power to fuel pump.
Underneath the hood on the LH fenderwell there is a diagnostic connector. In this connector there is a light blue and orange wire. With the key on ground this wire and see if the fuel pump has voltage. This will tell  what to troubleshoot further.

If there is power to pump, then check if  there is  fuel pressure present at the schrader valve port on the fuel rail?

If the fuel pressure is low,it can be weak fuel pump and clogged fuel filter.Both are to be replaced.

Also if there is no power to fuel pump then check the inertia switch located on the passengers side of the truck behind the kickpanel.

The location of inertia switch.When you open the passengers front door its the panel on the right where your feet are, it will have a opening for the switch for you to put your finger in and push the switch down. If the switch is tripped it will cut power to the fuel pump.Reset the switch and try to start the truck, if still nothing remove the panel and disconnect the two wire switch and check for 12v with the key in the on position, it will only power up for two seconds when the key is in the on position so put the tester in the connector and turn the key on, check both wires, if you have power on one of them then the fuel pump is going to be the problem. For the above step you will need help of helper to test or either to crank the vehicle.

These detail will help.
Thanks.

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