Hi, i think my bike is running too rich and thats why it now wont start and will only backfire. I only put new plugs in it a few days ago and now it wont start. From a previous thread i've found it should be from 1 1/4 to 2 turns, is this from turning the screw fully in and then 1 1/4 turns out. Also where is this screw and is there only 1. If youz could show me a pic I would grately appreciate it.
Cheers Ross
Wheres the pilot screw?
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ross01505
- Posts: 27
- Joined: Wed May 23, 2007 12:05 pm
Wheres the pilot screw?
what would life be without bikes!
ZXR400 l4
GSXR Shock
CBR954 Calipers
ZX7R Master Cylinder
Full Micron Sys
Custom Quickshifter
Braided Lines
Skimmed Head
Camera Mount - Yeeha!
ZXR400 l4
GSXR Shock
CBR954 Calipers
ZX7R Master Cylinder
Full Micron Sys
Custom Quickshifter
Braided Lines
Skimmed Head
Camera Mount - Yeeha!
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ross01505
- Posts: 27
- Joined: Wed May 23, 2007 12:05 pm
Also the bike is a L3 model, with a full micron exhaust, i dont know if this affects the amount the pilot screw adjustment. Cheers Ross
what would life be without bikes!
ZXR400 l4
GSXR Shock
CBR954 Calipers
ZX7R Master Cylinder
Full Micron Sys
Custom Quickshifter
Braided Lines
Skimmed Head
Camera Mount - Yeeha!
ZXR400 l4
GSXR Shock
CBR954 Calipers
ZX7R Master Cylinder
Full Micron Sys
Custom Quickshifter
Braided Lines
Skimmed Head
Camera Mount - Yeeha!
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SplaTZXR400
- Posts: 114
- Joined: Mon Nov 06, 2006 11:09 pm
- My Bike: ZXR400
- Location: Eastbourne, Sussex
i can tell ya, but iv jus put mine back so cant get a pic of mine, erm dunno how to add pics actually. anyway mines an L3 aswell, ur almost right, service manual says 1 1/2 turns, so ye all the way in and 540 degrees out, there is only one fuel screw on each carb so u must do all four evenly, u can get to them without taking the carbs off, but for accuracy u may aswell.
if you turn them upside down, look out for overflowin petrol and dont light up. you will be looking at the carb bowls you will see a hole tubey thing with a brass screw in there, thats the fuel screw. (clockwise = leaner, anticlockwise = richer) http://www.thumperfaq.com/images/fuel_screw_03.jpg i dunno how to add pics but iv added a link to a pic off google to show u wot i mean.
as for the exhaust i dunno how this really affects mixture, iv bin told its runs leaner and should be dyno'd but i dunno, i just listen for a crisp putt putt sound, not a flat thud, then u got a good mixture, and if it starts at all temps.
if you turn them upside down, look out for overflowin petrol and dont light up. you will be looking at the carb bowls you will see a hole tubey thing with a brass screw in there, thats the fuel screw. (clockwise = leaner, anticlockwise = richer) http://www.thumperfaq.com/images/fuel_screw_03.jpg i dunno how to add pics but iv added a link to a pic off google to show u wot i mean.
as for the exhaust i dunno how this really affects mixture, iv bin told its runs leaner and should be dyno'd but i dunno, i just listen for a crisp putt putt sound, not a flat thud, then u got a good mixture, and if it starts at all temps.