Go Back   PowerStrokeArmy > Power Strokes > 7.3 Tech

Reply
 
Thread Tools Display Modes
  #1  
Old 02-04-2019, 04:07 PM
greyford1979's Avatar
greyford1979 greyford1979 is offline
Major
Member's Gallery
 
Join Date: Jan 2013
Location: Copley,Ohio
Posts: 1,396
Default Spun Bearing?

So my truck has developed a knocking noise . The weird thing is that it's intermittent. No knocking when under acceleration, only when idling. I was going to get a video after working today, but of course no knocking noise. Even when it does, it sometimes just goes away. Pisses me because the truck isn't abused and well maintained. I'll try to get a video of it tomorrow if it decides to do it. And yes oil is good, not low and 1,300 miles away from needing an oil change.
  #2  
Old 02-04-2019, 04:32 PM
co04cobra's Avatar
co04cobra co04cobra is offline
Sponsor
Member's Gallery
 
Join Date: May 2011
Location: WV
Posts: 2,867
Default

I would guess it’s a intermittent fuel knock. Most of the time lower end noises won’t come and go.
__________________
00 cc/sb zf6 F250- Some stuff done always more to do-Fuel 300/200s Air-Garrett 68/94-Oil SRP 1-Airdog to Fuellab

97 cc/sb- zf-5- Work in progress. PMF rsk w/ SD axles. 66 turbo, E fuel, 230/100s. SB DD clutch.

08 cc/sb - Elite bottom end - 2 fuelers, 59vgt/78atmo, Midwest 100% nozzles and coated heads etc....

www.teddavisautos.com

Many parts available for super duty trucks PM me.
  #3  
Old 02-04-2019, 04:40 PM
mandkole's Avatar
mandkole mandkole is offline
Major
Member's Gallery
 
Join Date: Jan 2012
Location: Northwest
Posts: 2,274
Default

An accy or idler issue? Might try idling it with the belt removed.
__________________
2000 F250 CCSB GT4294R, 250/100s, Dahl/Fuelab, BTS, PHP tuning, stock 17* pump
1994 F250 SCLB
(sold)
1997 F250 CCSB 2wd (sold)
  #4  
Old 02-04-2019, 04:55 PM
greyford1979's Avatar
greyford1979 greyford1979 is offline
Major
Member's Gallery
 
Join Date: Jan 2013
Location: Copley,Ohio
Posts: 1,396
Default

Quote:
Originally Posted by co04cobra View Post
I would guess itís a intermittent fuel knock. Most of the time lower end noises wonít come and go.
Yeah that's why I thought it was weird. The knock does have a slight squeak to it, hopefully I can get a video of it. Or maybe it will just never do it again as long as I try to get a vid lol.

Quote:
Originally Posted by mandkole View Post
An accy or idler issue? Might try idling it with the belt removed.
It's definitely coming from the engine, not from any accessories. Actually seems to be more noticeable in the cab with the windows up than outside. These damn 7.3s with single shots are definitely not quiet lol.
  #5  
Old 02-05-2019, 07:06 AM
sootie's Avatar
sootie sootie is offline
General
Member's Gallery
 
Join Date: Oct 2012
Posts: 11,218
Default

check the torque converter bolts
  #6  
Old 02-05-2019, 03:58 PM
greyford1979's Avatar
greyford1979 greyford1979 is offline
Major
Member's Gallery
 
Join Date: Jan 2013
Location: Copley,Ohio
Posts: 1,396
Default

Made a video this morning when it was knocking, however didn't have the squeak to it. I was gonna make another this evening, but no knock.

https://youtu.be/DsaZVCWR7_I
  #7  
Old 02-07-2019, 06:05 PM
lincolnlocker's Avatar
lincolnlocker lincolnlocker is offline
General
Member's Gallery
 
Join Date: May 2011
Location: central new york
Posts: 25,381
Default

I haven't listened to the video yet as I'm at supper but what you described is flexplate/converter noise.

live life full throttle
__________________
00,f350,4x4,cc,drw, not stock
15,f350,4x4,cclb, not stock
god bless america and the farmer who feeds your fat ass
  #8  
Old 02-08-2019, 05:11 PM
greyford1979's Avatar
greyford1979 greyford1979 is offline
Major
Member's Gallery
 
Join Date: Jan 2013
Location: Copley,Ohio
Posts: 1,396
Default

Another video, this one slowing down from 25mph. Not sure how well you can hear it. It tends to be more noticeable when the engine is fully warmed up.

https://www.youtube.com/watch?v=S7XFhKDUy4c
  #9  
Old 02-09-2019, 09:04 AM
powerstroked08's Avatar
powerstroked08 powerstroked08 is offline
Colonel
Member's Gallery
 
Join Date: Sep 2012
Location: Pennsylvania
Posts: 3,416
Default

If you just rev it up is it still there?. And if you were to load it(put it in drive and hold the brake while giving it throttle) does it go away?

Sent from my SM-G950U using Tapatalk
__________________
2008 F-350 cclb ZF-6 speed
Just another white truck
Quote:
Originally Posted by Meniacal_Mark View Post
Time to dynamat the babies room lol
Quote:
Originally Posted by B585Ford View Post
Thats obviously for safety....ya never know when you might be going through an intersection and some idiot runs a light...anything under 1000HP and your toast.
  #10  
Old 02-11-2019, 03:31 PM
greyford1979's Avatar
greyford1979 greyford1979 is offline
Major
Member's Gallery
 
Join Date: Jan 2013
Location: Copley,Ohio
Posts: 1,396
Default

Quote:
Originally Posted by powerstroked08 View Post
If you just rev it up is it still there?. And if you were to load it(put it in drive and hold the brake while giving it throttle) does it go away?

Sent from my SM-G950U using Tapatalk
Really hard to tell, don't really notice it under those situations. Mostly just hear turbo and injectors.
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 10:29 AM.

 

Powered by vBulletin®
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

Designed by Military Ltd