Loud Knocing noise under hood - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Expedition Forum | Lincoln Navigator Forum
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

Ford Expedition Forum | Lincoln Navigator Forum Forum for discussion of the Ford Expedition and Lincoln Navigator.

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 08-12-2008, 12:58   #1 (permalink)
Registered User
 
Join Date: Aug 2008
Posts: 1
confused Loud Knocing noise under hood

Can someone please help!!!!! For the past few months I started hearing a loud knocking noise coming from the engine, at first I thought it was the valves not getting enough oil or maybe too liitle or dirty oil in truck. After a a few weeks its gotten louder. I recently changed the oil but the noise is still there. Does anyone have any idea what it could be? Could it have had dirty oil or too little oil for so long that i created a bigger problem?
kuipo34 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-15-2008, 07:10   #2 (permalink)
Frustrated EXPY owner
 
Goliath's Avatar
 
Join Date: Apr 2006
Posts: 18
Re: Loud Knocing noise under hood

Hello and welcome to the forum. Ok the first thing you need to do is you need to let everyone know what type of vehicle it is. That would be a good start and then someone that is familiar with that vehicle or has one will be able to help you. :)

DG
Goliath is offline   Reply With Quote
Old 08-23-2008, 18:12   #3 (permalink)
Registered User
 
beefsupreme's Avatar
 
Join Date: Aug 2008
Posts: 5
Re: Loud Knocing noise under hood

Usually knocking from under the hood is never a good thing. Is it coming from the top or bottom end? Is there old gas in the tank?
__________________
2003 Navigator- The Traveller
2004 Saturn Ion QC2 2.2 5M- The Driver
1999 Jeep Cherokee 4.0 5M- The Toy
beefsupreme is offline   Reply With Quote
Old 09-07-2008, 09:38   #4 (permalink)
canuck
 
360ci's Avatar
 
Join Date: Nov 2007
Location: Waterloo
Posts: 2,475
Re: Loud Knocing noise under hood

If the vehicle has been sitting for a while, it's best to put in a few gallons of higher octane fuel. If the spark plugs and wires haven't been changed in the last two years or 30K it's something to look into as well. If that doesn't get rid of the knock then take the vehicle in for a compression test to make sure all cylinders are in good order.

Also; once in a blue moon an oil filter will be faulty and the drain back valve won't function as designed giving a drier start than normal which allows the engine to have more metal on metal contact as oil takes longer to reach the top end.
__________________
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!
360ci is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Expedition Forum | Lincoln Navigator Forum



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 12:15.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.