Loud noise from front of engine

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Jun 6, 2018 | 05:35 PM

mikec205

Thread Starter

4wd Low

Joined: Jun 2014

Posts: 14

Likes: 0

Loud noise from front of engine

2004 Disco II, this loud sharp noise just started. It sounds like a marble bouncing around randomly. Where is this noise coming from?

Jun 6, 2018 | 05:58 PM

Jeff Blake

Pro Wrench

Joined: May 2016

Posts: 1,617

Likes: 184

From: Lake Tahoe

Something caught in the fan blade? Sounds external from here

Use a mechanic stethoscope to pinpoint where it's coming from

Jun 6, 2018 | 06:01 PM

Extinct

Baja

Joined: Feb 2013

Posts: 5,251

Likes: 1,804

From: Lynchburg VA

It sort of sounds like the liner tick, but we need a longer clip to play, with the engine idling at a slower speed (around 600 rpm), yours sounds like it is running about 1000 rpm right now.

Jun 6, 2018 | 09:18 PM

CollieRover

TReK

Joined: Mar 2014

Posts: 2,620

Likes: 313

From: Chicago

I’m seconding something in the fan.

Jun 7, 2018 | 02:24 AM

shanechevelle

Pro Wrench

Joined: Oct 2011

Posts: 1,709

Likes: 137

From: NE PA

Remove the fan and the serpentine. Start the truck.

If it still does it, it's something with the crank and the motor. If it doesnt, it's something with the fan or the accessories