5.4 2v Knocking noise?!?

Reply Subscribe

Thread Tools

Search this Thread

01-30-2013, 09:45 AM

yz534

Thread Starter

Join Date: Aug 2012

Location: Montana

Posts: 18

5.4 2v Knocking noise?!?

I have a 2002 Ford 5.4 2v and it has a knocking noise, only happens under a slight load, doesn't matter what engine temp is, and it starts at about 1600 rpm. Any ideas?

01-30-2013, 01:02 PM

Jay-rod427

3rd Gear Member

Join Date: Mar 2010

Location: KS

Posts: 555

the 5.4's especially with high mileage are known for the rod bearings going out.

01-30-2013, 07:06 PM

yz534

Thread Starter

Join Date: Aug 2012

Location: Montana

Posts: 18

it only has 60k on it. i have also heard that it might be the hydraulic lash adjusters.

01-30-2013, 08:42 PM

TCStangerv6

2nd Gear Member

Join Date: Oct 2008

Location: BFE

Posts: 473

Quote:

Originally Posted by Jay-rod427

the 5.4's especially with high mileage are known for the rod bearings going out.

Must mean mine with 198xxx on it will be coming out soon then.

Is it a hard loud knock? Can you get a video of it?

Last edited by TCStangerv6; 01-30-2013 at 08:46 PM.

01-30-2013, 11:25 PM

yz534

Thread Starter

Join Date: Aug 2012

Location: Montana

Posts: 18

It sounds like its coming from the passenger side. I'll try to get a video of it.

01-31-2013, 11:14 AM

yz534

Thread Starter

Join Date: Aug 2012

Location: Montana

Posts: 18

here is a link to the video:
http://www.youtube.com/watch?v=dLv10...ature=youtu.be

01-31-2013, 11:54 AM

jvog

5th Gear Member

Join Date: Mar 2008

Location: PA

Posts: 2,825

I don't think that's a lash adjuster

01-31-2013, 11:58 AM

yz534

Thread Starter

Join Date: Aug 2012

Location: Montana

Posts: 18

i was afraid of that haha but i think your right. Bearings?

01-31-2013, 02:33 PM

JC316

4th Gear Member

Join Date: May 2009

Location: DFW, TX

Posts: 1,925

Sounds like a rod knocking to me. Disable each cylinder, one at a time until the knock lessens, if it doesn't get quieter, then it's not likely to be a rod.