Help! Engine dies at idle when braking hard

Main Menu

Portal
Forums

Nevada Classics

Advertise at CC

November 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

CC Advertisers

· Kirkham Motorsports
Superformance
· Finish Line
· Hurricane Motorsports
· Serpent Express
·
· Planet Cobra

· Shell Valley Classic Wheels
· Eight Stack Injection

LinkBack

Thread Tools

Display Modes

#1 (permalink)

07-23-2009, 08:42 AM

garry viohl garry viohl is offline

CC Member

Join Date: Dec 2006

Cobra Make, Engine:

Posts: 96

Not Ranked

Help! Engine dies at idle when braking hard

The engines struggles and almost dies when braking hard in neutral for the last 10 to 20 feet of stopping. Here is what I have and done so far.

428 fe
Edelbrock rpm heads cam and manifold
Holley 800 double pumper
15 degress timing at idle
7 to 8 inches of vacuum at idle

I have tried adjusting floats
jet extensions on front bowl
vent whistles on front and back bowls
increase idle
dash pot
loop vent tubes on top of carb together
installed vacuum canister and tried them on carb pcv port and manifold port
called holley tech dept

Nothing has worked

Any ideas? Thanks.

« Previous Thread | Next Thread »

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 Forum Rules

All times are GMT -7. The time now is 05:29 AM.

Contact Us - Club Cobra Home - Archive - Top

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

Links monetized by VigLink