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Popcorn at freeway Speeds

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Old Dec 19, 2016 | 09:01 AM
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Question Popcorn at freeway Speeds

Hi All,

New to Ford and Diesel and 4x4's so I have nothing to go on here. But at freeway speeds the truck (96 F-250 XLT 4x4 fleetside long bed 7.3 diesel) sounds like it got a popcorn machine under the thing. In a regular car, I would expect to hear this in the passenger side dash and it would be a bubble in the cooling system or an a/c issue. Any Ideas.

Like I said I am truly new to all this and hope to pick some brains around here.

Goldie
 
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Old Dec 19, 2016 | 01:23 PM
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its is 20 years old, I know my door hinge pins need replacing which cause a bit of noise for me




The diesel engine does make a lot of noise compared to a gasser


Can you take a video of the noises?
 
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Old Dec 19, 2016 | 02:52 PM
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If you are not familiar with diesels, then it could just be the engine running at speed, doing its thing.

Diesels run on detonation(what you don't want your gas motor to do), so they are NOT very quiet(well unless it is a brand new one as they have really quieted them down).
 
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Old Dec 19, 2016 | 03:34 PM
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Originally Posted by Freightrain
If you are not familiar with diesels, then it could just be the engine running at speed, doing its thing.

Diesels run on detonation(what you don't want your gas motor to do), so they are NOT very quiet(well unless it is a brand new one as they have really quieted them down).

Truly Thanx for the reply, I am used the sound of diesels (military) this is not the normal noises I have heard from other trucks. I say I am new to the Diesel but not new to turning a wrench (17 yrs with Nissan) It sounds like an air bubble stuck in the cooling system or a heater core restriction or even an A/C restriction in the airbox. the problem is it sounds like it is under the cab slightly forward of the seat.
 
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Old Dec 19, 2016 | 03:35 PM
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Originally Posted by knottyrope
its is 20 years old, I know my door hinge pins need replacing which cause a bit of noise for me




The diesel engine does make a lot of noise compared to a gasser


Can you take a video of the noises?
I will try to get a video and post it.
 
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Old Dec 19, 2016 | 03:58 PM
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[QUOTE=knottyrope;16804466]its is 20 years old, I know my door hinge pins need replacing which cause a bit of noise for me

While we are waiting for a video of the noise. I cut a piece of rubber hose about the same diameter and length of the hinge pins and put a cut down the length and slipped it over the pin. Works great and no noise and an easy shut of the doors.
 
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Old Dec 19, 2016 | 05:01 PM
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If it is a snapping noise, kinda like an annoying blonde snapping their gum, then look at the belt
 
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Old Dec 19, 2016 | 09:20 PM
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Sounds like an exhaust manifold leak.
 
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