TheDieselPage.com Forums
 
The Diesel Page Forums

2019 - TDP's 23rd Anniversary
What's New | Feature Articles | Product Reviews | Member's Area | Free Forum Registration
Duramax 6600 Diesel Page | Advertiser's Section | Classified Ads | The Diesel Page - Publications


Go Back   TheDieselPage.com Forums > 2001-2019 Chevrolet & GMC 2500HD/3500 Light Trucks > Duramax 6600

Duramax 6600 Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines. Tips on performance, fuel economy, troubleshooting and more.

Reply
 
Thread Tools Display Modes
  #1  
Old 06-18-2019, 09:57 AM
ebenton2ph ebenton2ph is offline
Newbie
 
Join Date: Jun 2019
Location: Star, MS
Posts: 1
Default water pump, turbo, whirring noise

I recently changed the water pump on my 07 6.6 duramax. Since then I have a whirring noise on acceleration. Could this be related to the water pump or is it a problem with the turbo?
Reply With Quote
  #2  
Old 06-18-2019, 11:50 AM
rapidoxidationman rapidoxidationman is online now
Enthusiast
 
Join Date: Dec 2002
Location: Teton Valley, Idaho
Posts: 1,786
Default

Are you sure the seal on the exhaust end of the egr cooler tube is solid? A slight exhaust leak there will sound like that.
__________________
'85 Mercedes Benz 300D, for when I want to be stately.
'05 Mercedes E320 CDI, for when I want to be even statelier.
'05 Chevy K2500 ext cab long box DMax: Everything my '03 was and so much more!

There's no point being a pessimist - it wouldn't work anyway.
Reply With Quote
  #3  
Old 06-18-2019, 12:10 PM
More Power's Avatar
More Power More Power is offline
Administrator
 
Join Date: Feb 2000
Location: Montana
Posts: 10,518
Arrow

Quote:
Originally Posted by ebenton2ph View Post
I recently changed the water pump on my 07 6.6 duramax. Since then I have a whirring noise on acceleration. Could this be related to the water pump or is it a problem with the turbo?
Don't know about the whirring... but

Water pump seal leaks...

I have had water pumps on the 6.5L diesel last for 300k+ miles. I know of a Duramax water pump that lasted for at least 750k. These seals should last longer than any of us need them to.

Water pump seal leaks occurring in any diesel engine are more often than not caused by excessive pressure in the cooling system (combustion pressure finding its way in - due to bad head gaskets, EGR leaks, head crack/porosity, LB7 injector cups, and so on...

A quick check of the firmness of the top radiator hose after sitting overnight will reveal a cooling system overpressure problem.

Jim
Reply With Quote
  #4  
Old 06-19-2019, 11:02 AM
Kennedy Kennedy is offline
Long Distance Crew Chief for BMDMAX
 
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,691
Default

Quote:
Originally Posted by ebenton2ph View Post
I recently changed the water pump on my 07 6.6 duramax. Since then I have a whirring noise on acceleration. Could this be related to the water pump or is it a problem with the turbo?
The fist question I would ask is what did you use for a water pump? The proper LBZ/LMM water pump has a composite impeller with an aluminum hub. I see a good number of listings for cast impellers which is a big mistake to go with.
__________________
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT (Sold)
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
2016 GMC K3500SRW D/A CC short LTZ

Custom tuning in house using EFI Live tuning software!
Reply With Quote
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 -7. The time now is 06:53 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1996-2019 by TheDieselPage.com - All Rights Reserved