SUPPORT OUR SPONSOR

Go Back   Club Cobra > Club Cobra Tech Areas > Shop Talk

Welcome to Club Cobra!  The World's largest non biased Shelby Cobra related site!

  •  » Representation from nearly all Cobra/Daytona/GT40 manufacturers
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and nearly 1 million posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

MMG Superformance
Nevada Classics
Keith Craft Racing
Main Menu
Nevada Classics
Nevada Classics
MMG Superformance
Keith Craft Racing
Advertise at CC
Banner Ad Rates
Keith Craft Racing
January 2025
S M T W T F S
      1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31  

Kirkham Motorsports

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 11-14-2004, 03:07 PM
CHRIS DAMSCH's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Sep 2003
Location: WEST SUBURBS OF CHICAGO, IL
Cobra Make, Engine: SPF 1454
Posts: 1,137
Not Ranked     
Default Hesitation problem, Help!

I had to change the fuel bowl on the front of my carb a couple of weeks ago. Two days after changing the bowl I spent some time at the drag strip with some friends. The car revs up fine while at a standstill. At launch it had a real bad hesitation/bog happening. I believe that the changing of the fuel bowl is probably causing this. The only other thing that happened different as the day went on was that the car became harder and harder to turn over (the battery was dying), I needed a jump at the end of the day. I could use a little help trouble shooting this problem. Has anybody else had this type of hesitation under a load? The bogging at the launch felt like a fuel starving problem but with the dead battery at the end of the day I'm wondering if I have a small electrical problem somewhere?

Where should I start looking?

The car only has a few thousand miles and the battery is only two years old. Could it be the alternator, battery, or ?

Any experiences would be a great help.

Thank you,
__________________
CHRIS
Reply With Quote
  #2 (permalink)  
Old 11-14-2004, 04:12 PM
Big-Foot's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2004
Location: Kenyon, MN
Cobra Make, Engine: RCR GT40 #45
Posts: 245
Not Ranked     
Default

Many times when you R&R the float bowl, the accelerator pump arm requires re-adjusting. You want to remove all the slack in the adjuster arm by adjusting the spring loaded screw/nut assembly that pushes on the accelerator pump lever.

Holley recommends that you have .015" at WOT. I have seen some cams that would not give that much, but you really need to have "some" clearance at WOT or you will eat the pump cams up quickly.

Here's Holley's recommendation on adjusting the pump arm:
http://www.holley.com/HiOctn/TechSer...fo/TI-221.html
__________________
Regards - Randy
RCR40 #45 http://www.GT-Forty.com
Reply With Quote
  #3 (permalink)  
Old 11-14-2004, 07:24 PM
CHRIS DAMSCH's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Sep 2003
Location: WEST SUBURBS OF CHICAGO, IL
Cobra Make, Engine: SPF 1454
Posts: 1,137
Not Ranked     
Default

Thank you Randy. I will give this a try in the next day or so.
It seems since the only change I made was the fuel bowl this could very well be the problem.
__________________
CHRIS
Reply With Quote
  #4 (permalink)  
Old 11-14-2004, 08:21 PM
Big-Foot's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2004
Location: Kenyon, MN
Cobra Make, Engine: RCR GT40 #45
Posts: 245
Not Ranked     
Default

Chris - I just had another thought...

If you got the gasket on the float bowl backwards, the port that passes the fuel from the accelerator pump to the metering block will be blocked off and you won't be able to pass fuel.
Easiest way to tell if this happened is to pump the throttle while watching the accelerator pump lever to see if it moves and the nozzles to see if it is moving any fuel through..

Good luck
__________________
Regards - Randy
RCR40 #45 http://www.GT-Forty.com
Reply With Quote
Reply



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 On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 06:51 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy