Why is it so loud - Diesel Forum - TheDieselStop.com
Ford Diesel Forum / Powerstroke Forum
Ford Diesel Forum / Powerstroke Forum
Go Back   Diesel Forum - TheDieselStop.com > Ford Diesels > 6.9L Diesels

6.9L Diesels Technical discussion of topics related to vehicles powered by the 6.9 Liter In-Direct Injection Navistar engines.

TheDieselstop.com is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 02-02-2009, 11:15 AM   #1 (permalink)
Member
 
Join Date: Nov 2008
Location: Louisiana
Posts: 40
My Photos: (1)
Feedback Score: 0 reviews
Why is it so loud

We all know how loud our diesels are under the hood. What I was wondering
is exactly what component under the hood is making all the noise? Is it the injector pump, valve train or what? And knowing what it is, how can I quiet this beast a little. Its not comming from the exhaust just under the hood.
__________________
Jason Eschete 86 F-250 6.9L 180K miles
jasoneschete is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-02-2009, 12:04 PM   #2 (permalink)
Senior Member
 
cdnsarguy's Avatar
 
Join Date: Jan 2003
Location: Neepawa, Manitoba Canada
Posts: 20,672
My Photos: (109)
Feedback Score: 0 reviews
Most of the noise is the compression knock of a diesel.......
__________________
93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93

Toys: 2006 37' Triple E Embassy coach (powered by Cummins), 18' Sylvan Pro Fish with Mariner motors.

Proud Canadian BOOB man too!!

Please PRIVATE MESSAGE only!! ...
Please DO NOT.....visitor message me...
cdnsarguy is offline   Reply With Quote Quick reply to this message
Old 02-02-2009, 03:23 PM   #3 (permalink)
Senior Member
 
CDX825's Avatar
 
Join Date: Jan 2008
Location: Medina county Ohio
Posts: 706
My Photos: (11)
Feedback Score: 0 reviews
Send a message via AIM to CDX825 Send a message via Yahoo to CDX825
Synthetic oil quiets them down quite a bit.
__________________
-Justin

1984 F250 6.9 C6 2WD Push Button Glow plugs, No Soup bowl. Wix 33439 Water Separator, Carter P4594 fuel pump, Custom 3" Exhaust, NTZ Oil Bypass Filter, VDO Vision water temp gauge, ISSPRO EV Pyro

http://photobucket.com/CDX825
CDX825 is offline   Reply With Quote Quick reply to this message
Old 02-03-2009, 03:38 PM   #4 (permalink)
Senior Member
 
big99diesel's Avatar
 
Join Date: Apr 2008
Posts: 173
My Photos: (0)
Feedback Score: 0 reviews
Lucas Engine Stop Leak Or Oil Stabilizer Will Quiet It Down.
__________________
2003 F-250 6.0 74000miles Reg Cab 2wd.
big99diesel is offline   Reply With Quote Quick reply to this message
Old 02-03-2009, 05:14 PM   #5 (permalink)
Senior Member
 
1dieselman's Avatar
 
Join Date: Jan 2009
Location: Page, AZ
Posts: 513
My Photos: (12)
Feedback Score: 0 reviews
Do you still have the insulation attached under the hood. If not maybe some hush mat glued in its place might help.
__________________
Jack
97 F250 XLT CCSB 4x4, PSD, heavy duty E4od, fast spool 1.0 turbo, deleted ebpv, 203* t-stat, high pressure X line, 140v Idm, Diy 6637 filter, 60hp Superchip, Isspro Ev gauges, Intercooled, 3" downpipe 4" shorty exhaust, 4" lift, 4:10 gears, 35" tires, 310,000 miles
1dieselman is offline   Reply With Quote Quick reply to this message
Old 02-08-2009, 01:45 PM   #6 (permalink)
rmr
Senior Member
 
Join Date: May 2000
Location: WA State, Arizona , Alaska
Posts: 1,880
My Photos: (0)
Feedback Score: 0 reviews
Mine used to be really loud until I had the IP timed.
It was to far advanced and now it's way quieter, smoother running. When it's warmed up anyway
__________________
1986 F250,Regular cab,XL,4X4,6.9, 4 speed,
rmr is offline   Reply With Quote Quick reply to this message
Old 02-14-2009, 01:12 AM   #7 (permalink)
Senior Member
 
1987IDI's Avatar
 
Join Date: Jan 2009
Location: Urbana Ohio
Posts: 343
My Photos: (14)
Feedback Score: 0 reviews
I've always been told its a mix between the high compression combustion of diesel and the injector pump/mechanical injectors.
__________________
1987 F250 XLT Lariat
Regular Cab 2x4 6.9L 5-Speed

Homemade Propane Injection.

RUNS ON PURE WASTE MOTOR OIL!
No more diesel for me...
1987IDI is offline   Reply With Quote Quick reply to this message
Old 02-14-2009, 11:59 AM   #8 (permalink)
Member
 
Join Date: Nov 2008
Location: Louisiana
Posts: 40
My Photos: (1)
Feedback Score: 0 reviews
Thanks for the info everyone. Right now she is in a few pieces but should have her back together in a few weeks. I'm painting the accessories under the hood so I cant crank her up yet. I will try the synthetic oil and lucas engine stop leak. I added a hood insulator mat but didn't run her yet. Also how do I check the timing on her I have an old timing light but I never used it. I was also wondering If I should remove the exhaust manifold and clean it out. I work on Detroit diesels at my job and I had one's exhaust manifold caked with 1/4 inch of crud
__________________
Jason Eschete 86 F-250 6.9L 180K miles
jasoneschete is offline   Reply With Quote Quick reply to this message
Old 02-14-2009, 12:20 PM   #9 (permalink)
Senior Member
 
1dieselman's Avatar
 
Join Date: Jan 2009
Location: Page, AZ
Posts: 513
My Photos: (12)
Feedback Score: 0 reviews
You need the feret adapter to use a timing light. There should be no reason to clean out the exhaust manifolds on this as opposed to a detroit especially a two cycle that has spent to much time idling.
__________________
Jack
97 F250 XLT CCSB 4x4, PSD, heavy duty E4od, fast spool 1.0 turbo, deleted ebpv, 203* t-stat, high pressure X line, 140v Idm, Diy 6637 filter, 60hp Superchip, Isspro Ev gauges, Intercooled, 3" downpipe 4" shorty exhaust, 4" lift, 4:10 gears, 35" tires, 310,000 miles
1dieselman is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Diesel Forum - TheDieselStop.com > Ford Diesels > 6.9L Diesels

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On



Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 09:12 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.