I have got a question

[Smkblwr]

A friend of mine just bought a 2004 Ford Excursion with the 6.0L. It's probly a normal sound but, it makes a pumping sound for a few seconds when he shuts it down. What is it, and is it normal? thanks for any help.
Smkblwr

 

[william_04_x]

where is the noise coming from?

 

[heinzboy]

Sounds like the injector flash is still in it.

 

[Blue2Fifty]

x2 on injectors...

 

[Smkblwr]

william_04_x I'm not sure where it is coming from, I was walking by it when he parked and shut it down. didn't have time to find it. He thought it was coming from the somewhere around the turbo, I'm guessing the back of the motor. I will try to find the location of the sound.

Blue2Fifty, heinzboy what is the injector flash? I know nothing about the Powerstrokes.
thanks Smkblwr

 

[Blue2Fifty]

The injectors buzz for a few seconds after shutdown, it was one of Ford's older cold start flashes, if the truck still runs good with it and has no cold start issues, I wouldn't bother getting a newer reflash.

 

[Smkblwr]

thanks for the reply, I will pass along the info.
Smkblwr

 

[Cobra 19 & 54]

it could also be the turbo winding down... mine is loud as hell.

 

[!!!PainTrain!!!]

Do yourself a favor and don't get any new flashes on that thing. They do nothing but ruin performance and mpg.

 

[JRENIGAR]

x2 on turbo winding down, especially if it has an intake kit on it.

 

[Dalpilot]

Its the injector flash.

 

[mdub707]

Sounds like the old injector flash to me as well.