fuel pump question

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Mar 26, 2009 | 07:14 AM

salty

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fuel pump question

why does my fuel pump run for 15-20 seconds after shutting down the engine on my 04 F-350? Just curious. Guy I got it from said all of the older model 6.0's do this to prevent fuel from boiling in the injectors?

Mar 26, 2009 | 07:46 AM

juneau76

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Their is a thread about this going around right now. Unfortunately, I can't find it to point you to it. There was a flash done to your truck's computer to make it do this to clear the injectors. If I find the thread, I will post it here for you.

Mar 26, 2009 | 08:01 AM

salty

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Thanks!!

any help is appreciated

Mar 26, 2009 | 08:11 AM

Maxium4x4

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From: Ohio

The fuel pump shouldn't be what your hearing, this is a link to Inductive Heat Flash.

https://www.ford-trucks.com/forums/8...eat-flash.html

Mar 26, 2009 | 08:11 AM

69cj

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From: Middle Tn.

You have what's called the buzz flash to clear the injector spools of oil. There is a later flash called the inductive flash that does that at start up thru electrical induction thus eliminating the buzz. The later flash also exercises your turbo and varies rpm's after X amount of idleing.