The unofficial resource center for Mustang owners and enthusiasts
Ford Mustang Forums - Ford Mustang Classifieds - MustangForums.com Photo Galleries - MustangForums.com Chat Room - Create an Account - Mustang News


Go Back   MustangForums.com > Ford Mustang Tech > 4.6 (Modular) Mustang > SVT Forums
Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
Thread Tools Search this Thread
Old 10-19-2009, 10:51 PM   #1
mustang90242
1st Gear Member
 
Join Date: Jun 2009
Vehicle: 1992, ford, mustang
Location: ca
Posts: 145
Exclamation engine knock!!!

i just got a 1999 cobra

and it makes a little knocking noise wen it hits 2200 rpm



i cant take video because my phone cant


wat could be the problem?
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
__________________
stock 1999 cobra= daily driver

1992 351 mustang=traded
mustang90242 is offline   Reply With Quote
Old 10-19-2009, 11:08 PM   #2
mustang90242
1st Gear Member
 
Join Date: Jun 2009
Vehicle: 1992, ford, mustang
Location: ca
Posts: 145
Default

wen it idles its fine...its only wen i drive
__________________
stock 1999 cobra= daily driver

1992 351 mustang=traded
mustang90242 is offline   Reply With Quote
Old 10-19-2009, 11:39 PM   #3
lizzyfan
Made Moderator
 
lizzyfan's Avatar
 
Join Date: Jan 2006
Vehicle: 98 GT Blumurder
Location: Helaware
Posts: 11,503
Default

Sounds like detonation
__________________

Tuned by Matt at Performance Evolution
432 rwhp
426 tq

DD-2008 Mazda3 Zoom Zoom!
1996-Ranger (AKA "Barney") RIP 305K!
lizzyfan is offline   Reply With Quote
Old 10-19-2009, 11:52 PM   #4
mustang90242
1st Gear Member
 
Join Date: Jun 2009
Vehicle: 1992, ford, mustang
Location: ca
Posts: 145
Default

Quote:
Originally Posted by lizzyfan View Post
Sounds like detonation
which is?
__________________
stock 1999 cobra= daily driver

1992 351 mustang=traded
mustang90242 is offline   Reply With Quote
Old 10-20-2009, 12:31 AM   #5
5.0 85 GT
3rd Gear Member
 
Join Date: Nov 2007
Location:
Posts: 843
Default

your timing is off which he means by detonation, dont beat on the car while this is happening, get it to a shop and have them retime the cobra to specs....they will use a timing gun
__________________

Big Snake, Little Bite...Full Bolt-On 97 Cobra, Bored .30 over...Need Kenne Bell
-1986 IROC-Z-SOLD
-1985 GT T-Top-SOLD
-1994 GT-SOLD
-2002 GT-SOLD
-1997 COBRA-LOVE!!
-1988 Mercury Cougar Bostonian, 5.0 60k Mile Peach
-1985 GT-Carb'd Special, Bolt on's and a t-5 n Sunroof!
-1993 Ford F-150 4.9I6 5 Speed-WON'T DIE
5.0 85 GT is offline   Reply With Quote
Old 10-20-2009, 12:33 AM   #6
mustang90242
1st Gear Member
 
Join Date: Jun 2009
Vehicle: 1992, ford, mustang
Location: ca
Posts: 145
Default

how much would it cost to have it retimed? a rough estimate
__________________
stock 1999 cobra= daily driver

1992 351 mustang=traded
mustang90242 is offline   Reply With Quote
Old 10-20-2009, 06:58 AM   #7
timspony
SVT Section Moderator
 
timspony's Avatar
 
Join Date: Jul 2008
Vehicle: 03 & 04 SVT Cobra
Location: Burnt Hills, NY
Posts: 7,026
Default

Is the noise there only when the car is cold? Modular engines known to make some noise...
__________________


2003 SVT Cobra, DSG #7248 of 8394, Bassani Catted X, Flowmasters, JLT CAI, 2.76 BF Pulley, AFCO HE, PFab Tanks, SCT Xcal2, Pro 5.0, BF IRS Brace, Nitto 315 DR's...465 rwhp, 456 rwtq - Tuned by Mustang Magic!

2004 SVT Cobra, TR #269 of 1896 RagTop...Not Stock!
timspony is offline   Reply With Quote
Old 10-20-2009, 01:39 PM   #8
mustang90242
1st Gear Member
 
Join Date: Jun 2009
Vehicle: 1992, ford, mustang
Location: ca
Posts: 145
Default

Quote:
Originally Posted by timspony View Post
Is the noise there only when the car is cold? Modular engines known to make some noise...
its does it hot and cold
__________________
stock 1999 cobra= daily driver

1992 351 mustang=traded
mustang90242 is offline   Reply With Quote
Old 10-20-2009, 02:57 PM   #9
Smokin04
2nd Gear Member
 
Smokin04's Avatar
 
Join Date: Apr 2009
Vehicle: 2004 SVT Cobra
Location: GA
Posts: 233
Default

Need more details...

Car year?
Engine?
Base timing if a 5.0?
Does the knock happen @ WOT at 2200 rpm or just cruising?
__________________
Silver 04 SVT Cobra
Twin 57mm Garrett Turbos
Full Maximum Motorsports (and QA1) Suspension
Huge Brakes
Loud Audio
900 HP Daily Driven Boulevard Monster


See a full mod list, Dyno Vids and Build Slideshow here:www.fquick.com/smokin04 Just click on the Cobra.

"VPR KLR"
Smokin04 is offline   Reply With Quote
Old 10-20-2009, 06:10 PM   #10
mustang90242
1st Gear Member
 
Join Date: Jun 2009
Vehicle: 1992, ford, mustang
Location: ca
Posts: 145
Default

Quote:
Originally Posted by Smokin04 View Post
Need more details...

Car year?
Engine?
Base timing if a 5.0?
Does the knock happen @ WOT at 2200 rpm or just cruising?
wen it passes 2200 rpm...just a little ticking noise
__________________
stock 1999 cobra= daily driver

1992 351 mustang=traded
mustang90242 is offline   Reply With Quote



Reply



Tags
1985, 50, 92, 99, cobra, engine, fine, front, gear, hot, idles, knock, knocking, knocks, mustang

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off
Forum Jump

Advertising

Featured Sponsors
New Sponsors
All times are GMT -5. The time now is 06:35 PM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.2.0

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company