sits for a couple of days it want start?

2001 FORD F-150
208,000 MILES • 4.6L • 6 CYL • 2WD • AUTOMATIC
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FUZZ519
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If my 2001 ford f150 truck sits for a couple of days it want start. But if i spray starting fluid in throttle body it starts right up and runs fine.

Mar 18, 2026 at 5:10 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
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This sounds like a weak fuel pump, let do a fuel pump pressure test you can rent the gauge set for free at the auto parts store. Please go over this video

https://www.youtube.com/watch?v=kgEixCsqcYM&pp=0gcJCcUKAYcqIYzv

The fuel pressure sound be: 35-45 psi at idle.

This guide goes over all reasons for a hard start so please check it out as well.

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

Please upload a short video in your response of the problem, so I can see what's going on. Ken
Mar 19, 2026 at 10:22 AM
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