Tapping Noise 7.3

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Aug 6, 2021 | 11:34 AM

Bsfu211

Thread Starter

Trailering

Joined: Jul 2021

Posts: 16

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Tapping Noise 7.3

Hi Guys, just noticed a tapping noise from my 7.3. 191,000 miles. Can anyone tell what it is. I only hear it at idle.

https://youtu.be/m7-EFIqQy-w

Aug 6, 2021 | 11:53 AM

RacinJasonWV

Lead Driver

Joined: Jul 2017

Posts: 6,855

Likes: 2,332

From: WV

Welcome to FTE!

Sounds normal to me.

Sometimes an exhaust manifold or uppipe leak can sound like a tap/knock.

Your link didn’t come through well so I’ll try and get it here for you.

Aug 6, 2021 | 01:36 PM

Bitterroot Diesel

Former Vendor

Joined: Sep 2020

Posts: 2,597

Likes: 695

From: Florence, MT

That's your truck saying it wants BDP 238/80s

Can't pick up anything from the video, but it's possible to have a fuel knock from unbalanced injectors.

Aug 6, 2021 | 01:54 PM

Sous

FTE Leadership Emeritus

Joined: May 2014

Posts: 27,352

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From: Lake Hartwell, GA

Welcome to the FTE!

Sounds normal to me as well.

Aug 6, 2021 | 03:24 PM

PriusLover

Laughing Gas

Joined: Mar 2021

Posts: 1,118

Likes: 425

Quote:

Originally Posted by Bitterroot Diesel

Can't pick up anything from the video, but it's possible to have a fuel knock from unbalanced injectors.

Wouldn't this show on a CCT?

Aug 6, 2021 | 03:28 PM

Walleye Hunter

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Joined: Mar 2014

Posts: 10,750

Likes: 1,065

From: Douglassville, PA

It's the engine running, when you can't hear it any more, you got problems.

Aug 6, 2021 | 05:18 PM

Jimmy's Pilot Service

Laughing Gas

Joined: Nov 2020

Posts: 994

Likes: 367

From: Republic of Texas

Sounds like a 7.3 singing the song of the fuel gods as only a 7.3 can.

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Aug 7, 2021 | 07:16 AM

Listor

Fleet Mechanic

Joined: Sep 2011

Posts: 1,613

Likes: 106

From: Albuquerque

Sounds normal, you may have a little exhaust leak, but don't we all !

Aug 7, 2021 | 07:55 AM

#10

bsiliani

Tuned

Joined: Nov 2018

Posts: 292

Likes: 64

From: PA

Sounds normal.
I might add that changing to a synthetic blend and adding a fuel additive seemed to quiet mine down some.
But I like to spend money and it probably does nothing at all except make me feel better.
Even new injectors are loud until they break in many thousands of miles.

Aug 7, 2021 | 04:19 PM

#11

z31freakify

Hotshot

Joined: Dec 2012

Posts: 11,271

Likes: 1,654

From: Las Cruces New Mexico

I hear it, could be injectors like BRD mentioned. But like everything could be just the nature of your engine, some 7.3 engines are loud AF then there's others that are quiet as the newer diesel trucks