Humm a few seconds after kill - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 05-16-2014, 01:40 PM Thread Starter
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Humm a few seconds after kill

Every time I kill my truck 30 seconds later something around the engine bay starts to hummmmm. Anyone know what this might be?


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2012 F250 KR, H&S mini max, full delete, Carli 2.5" pin top w/full replacement leafs, S&B intake, ADII and a camper shell!!!!
2013 Touareg TDi (mommas ride) She won't let me touch it.
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post #2 of 6 Old 05-16-2014, 01:44 PM
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electric cooling fan????
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post #3 of 6 Old 05-16-2014, 01:54 PM
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Fuel pressure bleeding down, its normal. These trucks make quite a few noises while they are off

Matt
2011 F350 6.7L CC/LB SRW 4x4 King Ranch White Tri Coat
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post #4 of 6 Old 05-16-2014, 01:59 PM Thread Starter
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Fuel psi!!! Thanks the line was rattling. That it!!


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2012 F250 KR, H&S mini max, full delete, Carli 2.5" pin top w/full replacement leafs, S&B intake, ADII and a camper shell!!!!
2013 Touareg TDi (mommas ride) She won't let me touch it.
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post #5 of 6 Old 05-17-2014, 07:57 AM
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Quote:
Originally Posted by 31 YNOT View Post
Fuel pressure bleeding down, its normal. These trucks make quite a few noises while they are off
Yep, Diesel @ 30000psi has to go somewhere

2015 F350 King Ranch
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2011 F350 KingRanch 6.7L
AFE stage 2 intake
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dual 6" MBRP black stacks. DPF, DEF, EGR Delete
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post #6 of 6 Old 05-17-2014, 08:26 AM
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Quote:
Originally Posted by matty21 View Post
Yep, Diesel @ 30000psi has to go somewhere
Cummins CM2150 C3 injectors will hold PSI for weeks. Good surprise first time you crack a line open. Nothing like a good 24K psi squirt..

On the trucks you can also hear the DEF pump purge after key off when standing beside the truck box, That kinda hums to.

2013 - F350 CCLB. - 8" Lift on 37s. H&S XRT w/ CTS. Sinister EGR Delete. MPD CCV Delete. Wicked Wheel 2. SDP Downpipe. No Limits CAI. 5" FloPro. Retrofit HIDs.

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