U2U | Member List | Search | Photo Archive | Chat | Links | Shop
Not logged in [Login - Register]
LocostBuilders » Forum » Engine & Transmission » too rich off idle bike carbs Power Tools at MachineMart.co.uk   go to bottom
Printable Version | Subscribe | Add to Favourites
 New Topic New Poll New Reply
Author: Subject: too rich off idle bike carbs
legend
Junior Builder






Posts 49
Registered 9/7/16
Member Is Offline

Photo Archive Go!
Building:

posted on 29/10/17 at 06:06 PM Reply With Quote
too rich off idle bike carbs

using zzr1100 on my 1.8 zetec 1.7 mains idle screws 2 turns out and on light throttle with no load running too rich at 6-7 on co would a shallow bike carb angle make it run rich or lean?? seam to get a lot of smoke off idle or is it lack of load on engine ?
View User's Profile View All Posts By User U2U Member
legend
Junior Builder






Posts 49
Registered 9/7/16
Member Is Offline

Photo Archive Go!
Building:

posted on 29/10/17 at 06:16 PM Reply With Quote
and yes i am using bike fuel pump
View User's Profile View All Posts By User U2U Member
CosKev3
Contributor






Posts 3596
Registered 1/7/04
Location Oswestry,Shrops.
Member Is Offline

Photo Archive Go!
Building: AJ30 V6 in progress
posted on 29/10/17 at 06:46 PM Reply With Quote
WOT it's running a decent AFR?

Light throttle fueling is done by altering the needles,either height or size/shape.
View User's Profile View All Posts By User U2U Member
chris
Contributor






Posts 377
Registered 18/1/15
Location leicester
Member Is Offline

Photo Archive Go!
Building: gbs zero built zetec turbo megasquirt ms3x
posted on 29/10/17 at 11:53 PM Reply With Quote
1.7 is a bit big for a 1.8 engine mine were only 1.45 on a 2ltr
View User's Profile E-Mail User View All Posts By User U2U Member
davidimurray
Contributor






Posts 813
Registered 25/1/10
Location South Wales
Member Is Offline

Photo Archive Go!
Building: Haynes Roadster
posted on 30/10/17 at 09:03 AM Reply With Quote
Each needle/ jet covers a certain area of fuelling




So if your issue is at light load/idle then I would be looking at winding in your idle jets and seeing if it drops.

Main jet size needs to be whatever suits your engine and many factors can adjust that. On my duratec, without my cold air feed backplate I need 1.75mm jets, when I put the backplate on I need 2.1mm jets!




Gallery 1 http://www.facebook.com/media/set/?set=a.116893465324.130778.601005324
Gallery 2 http://www.facebook.com/media/set/?set=a.245243755324.181913.601005324&l=a9831a9319
Gallery 3 http://www.facebook.com/media/set/?set=a.440671625324.232627.601005324&l=3f0d42c523
Gallery 4 http://www.facebook.com/media/set/?set=a.490098255324.297598.601005324&l=efb083b7df
Gallery 5 http://www.facebook.com/media/set/?set=a.10150244028550325.366987.601005324&l=583fd5cd3a
Gallery 6 http://www.facebook.com/media/set/?set=a.10150550640070325.430417.601005324&type=3&l=fe779b358c
Duratec Engine Swap https://www.facebook.com/media/set/?set=a.10152527759580325.1073741828.601005324&type=1&l=40aae5e72f " target="_blank"> https://www.facebook.com/media/set/?set=a.10152527759580325.1073741828.601005324&type=1&l=40aae5e72f
View User's Profile View All Posts By User U2U Member

New Topic New Poll New Reply


 LocostBuilders » Forum » Engine & Transmission » too rich off idle bike carbs go to top






Website design and SEO by Studio Montage

All content © 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [© 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.