427W TWM starting - backfiring

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)

05-28-2009, 01:25 PM

StreetSnake StreetSnake is offline

CC Member

Join Date: Sep 2006

Cobra Make, Engine:

Posts: 343

Not Ranked

427W TWM starting - backfiring

I have a 427 W with a TWM stack EFI. When the car has been sitting, overnight lets say, I try to start it and it backfires through the throttle bodies. It does this once or twice and then fires up. When the engine is warm it doesn't do it.

I turn power on, wait for fuel pump to cycle, crack the throttle and fire. I don't have an IAC plate on the stacks and that is why I crack the throttle. Is it that or is it timing, I'm at a loss and so is the guy that tunes my car. Any thoughts?

« 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 01:06 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