Search



Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech)
Sign in using an external account
Register Forgot Password?
Search

Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

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 04-14-2007, 10:53 PM   #1
rhinobacker
 
Join Date: Apr 2007
Location:
Posts: 16
Default Flat spot from idle

Help me, I've adjusted the timing but still have a flat spot on my 68 289 from idle to about 3500rpm then it's fine.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
rhinobacker is offline   Reply With Quote
Old 04-14-2007, 10:59 PM   #2
350kmileFord
3rd Gear Member

 
Join Date: Jun 2006
Vehicle: 1966 Ford Mustang
Location: California
Posts: 621
Send a message via AIM to 350kmileFord
Default RE: Flat spot from idle

Sounds like my Mustang, 'cept it only lasts till about 1500 rpm.
Same issue on my '71 F-250 >_<

It goes away completely on the Mustang once it's warm though.
__________________
350kmileFord is offline   Reply With Quote
Old 04-14-2007, 11:18 PM   #3
rhinobacker
 
Join Date: Apr 2007
Location:
Posts: 16
Default RE: Flat spot from idle

Strangely enough after I had her running for little while yesterday it did get a bit better. Given that she is unregistered at the moment I can't rlegally take her for a big drive but I will try and leave her running for while and see what happens. Thanks.
rhinobacker is offline   Reply With Quote
Old 04-15-2007, 02:53 AM   #4
alderpulp
 
Join Date: Apr 2007
Location:
Posts: 16
Default RE: Flat spot from idle

my 68 289 was the same...a friend rebuilt the 2 barrel carb for me....it got better, but didn't go away...I just put in a petronix pointless ignition, and it has GREATLY improved the flat spot......it is very very minor at this point...ap
alderpulp is offline   Reply With Quote
Old 04-15-2007, 05:12 AM   #5
rhinobacker
 
Join Date: Apr 2007
Location:
Posts: 16
Default RE: Flat spot from idle

Thought I better add a photo of my girl. She is in need of some TLC, but that was one of the reasons I bought her.

[IMG]local://upfiles/66019/1E3D056E4B0941A2821DD1C4CB3816BE.jpg[/IMG]
rhinobacker is offline   Reply With Quote
Old 04-15-2007, 05:52 AM   #6
350kmileFord
3rd Gear Member

 
Join Date: Jun 2006
Vehicle: 1966 Ford Mustang
Location: California
Posts: 621
Send a message via AIM to 350kmileFord
Default RE: Flat spot from idle

A fellow deuce-panner >_<
__________________
350kmileFord is offline   Reply With Quote
Old 04-18-2007, 07:30 AM   #7
rhinobacker
 
Join Date: Apr 2007
Location:
Posts: 16
Default RE: Flat spot from idle

The flat spot has now moved to 1500rpms. I've put in a new coil and went to gap the points and adjust the dwell and the f0rken points and condenser looked 40 years old. I feel like an idiot. Why would someone change distributor cap, rotor, leads and plugs but not the points (the previous owner). I should have looked at these first. Hopefully this fixes everything. BTW I am working on a Dwell of 30 degrees. Does anyone disagree?
rhinobacker is offline   Reply With Quote
Old 04-18-2007, 12:59 PM   #8
Soaring
I ♥ Acer
 
Join Date: Oct 2004
Location:
Posts: 17,565
Default RE: Flat spot from idle

According to my Haynes manual, the '68 289 dwell angle is 27. Point gap is 0.021 and the initial timing is 6 degrees BTDC.
Soaring is offline   Reply With Quote
Old 04-18-2007, 12:59 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
50, flat, mustang, spot, timing

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
EXHAUST FUMES KILLING ME...... CyprusMustang Classic Mustangs (Tech) 34 07-15-2009 01:28 PM
well its in! afixer V6 S197 General Discussion 61 04-22-2006 01:40 PM

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 10:56 AM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.5.2

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
Emails Backup