Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Demon carb help
Thread: Demon carb help
View Single Post
  #2 (permalink)  
Old 12-11-2011, 06:34 AM
TommyK TommyK is offline
Registered User
Last photo:
Join Date: May 2010
Location: CT
Posts: 300
Wiki Edits: 0

Thanks: 5
Thanked 42 Times in 40 Posts
You can take some small diameter wire (like bell wire) and temporarily place it in the idle air bleeds to partially restrict them and go for a test ride. If it improves it is an indication your idle jet is too small. You will then need to determine what size the idle jet (IFR) is in the metering block and enlarge it. Be careful. A small increase in diameter makes a big difference in the amount of fuel it will pass. Go up .002 at a time and test. When you get it close you can fine tune with the idle air bleed size if the are removable.

A wide band O2 meter takes the guess work out of this process.
Reply With Quote