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Truck will not stay running

Tiny
DCPBOL20
  • MEMBER
  • 2007 FORD F-150
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Truck sat for about a year.
Changed Spark Plugs.
Ignition coils are good/replaced one.
New Fuel pump module.
New Starter.
New Battery.
Ran Seafoam through oil and fuel.
Cleaned Throttle body and MAF sensor.
Truck is hard to start, have to push on the gas to get it going, but it won't stay running.
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Tuesday, October 26th, 2021 AT 9:20 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I would start by changing the fuel itself. Fuel that old is not good anymore. There is no additive that will make the fuel better.

https://www.2carpros.com/articles/engine-has-low-power-output

Bad fuel will give you a hard start and no power. In fact, at times, you are lucky if it will run at all.

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

You can get a siphon at a parts store and remove all the fuel from the tank and then add about 10 gallons of new fuel to the tank. You can buy one at a parts store.

Roy

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Wednesday, October 27th, 2021 AT 2:57 AM

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