fast idle - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 10-19-2004, 11:58 AM
frydz1985's Avatar
Registered User
Last photo:
Join Date: Oct 2004
Location: kansas city
Age: 39
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Question fast idle


Can anyone explain what "fast idle" is?

More specifically, how can it be measured and what is its purpose/effect?

I have a holley street avenger 570, and the literature says that the "fast idle speed" is factory set to 1500-1600 rpm. That is really high for my idle, but maybe I'm not following what it truly means.

I currently have the actual idle set to around 850rpm when in neutral... so I'm not sure when the "fast idle" comes into play.

Thanks for any info.


Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 10-19-2004, 12:12 PM
Jmark's Avatar
Last photo:
Join Date: Sep 2003
Location: phoenix
Age: 62
Posts: 5,033
Wiki Edits: 0

Thanks: 124
Thanked 103 Times in 83 Posts
Fast idle is use when the choke is partially closed and pulls up on a cam on the pass side of the carb to bump up the idle speed when cold. Once the choke warms up, the spring inside unwinds and drops the "fast idle cam" back down and you resume using the base idle screw.
Reply With Quote Quick reply to this message

Recent Engine posts with photos
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may 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

All times are GMT -6. The time now is 06:37 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright 1999 - 2012. All Rights Reserved.