| Terry Stapley |
05-04-2004 08:57 PM |
emissions test completed
I got through my 2nd emissions test today and passed 3 out of four categories. My 418 failed the idle HC ppm miserably. The cam is very radical and i am wondering if anyone has suggestions on how to lower my idle HC? I have drilled a 3/32 hole in each of the primary butterflies on my holley 750 DP. Would changing the power valve to a lower number help?
|
| Cobra20646 |
05-05-2004 05:58 AM |
I've heard that increasing the idle speed during the test will help pass.
If your idle vacuum pressure is below that of the power valve rating, you may have a problem. Take an idle reading and install a power valve with a rating of a few inches over that.
|
| All times are GMT -7. The time now is 07:35 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:
