AC 90-youth carburetor in cold weather-Colorado - ArcticChat.com - Arctic Cat Forum

General ATV Discussion Discussion Forum for Arctic Cat ATVs

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 11 Old 02-27-2012, 03:49 PM Thread Starter
Junior Member
 
Junior Member
Join Date: Sep 2011
Location: denver, co
Posts: 4
Thanks: 3
Thanked 0 Times in 0 Posts
AC 90-youth carburetor in cold weather-Colorado

I have a 2005 arctic cat 90 youth that ran fine in the summer months. i tried starting it in the winter and would barely keep idle. I assume it is b/c of the cold air/dense air, and i need to change my pilot jet. The stock jet in there now is a 40. does anyone know what jet to use for high altitude and cold weather, i live in denver, colorado and for temperatures in the 30's.

Any carb advice would be great!

I attached the stock carb specs in a pic.
Attached Thumbnails
Click image for larger version

Name:	IMG00715-20120226-2140.jpg
Views:	1140
Size:	41.3 KB
ID:	212914  
pwoodford7 is offline  
Sponsored Links
Advertisement
 
post #2 of 11 Old 02-27-2012, 09:29 PM
Super Moderator
 
400crasher's Avatar
ArcticChat.com Moderator
 
Super Moderator
Join Date: Oct 2007
Location: BrokeBack, Colo.
Posts: 4,984
Thanks: 112
Thanked 234 Times in 188 Posts
Sled: trash can lid behind the Dmax.
07-08 Mileage: 1/4 mile, then lid hit a tree.
ATV: 400 auto, 650H1
2007 Mileage: 500
2006 Mileage: 3500
I dont know in what incriments the pilots run, but usually 15% leaner does it. A 35 would be in the park for the pilot. I dont see much change in mine year round, but adjusting both the main and pilot should help a lot.

Lime `06 400 and O`range `12 550
KTM 520 EXC
92 Polaris Indy 500 EFI sled (Hey, Im learnin)


CMTRA , our local club. fighting to keep our trails open! http://www.cmtrail.org/
FACEBOOK: http://www.facebook.com/pages/CMTRA-...93497480714904


Unfortunately,,we have to comply with designated routes,,no more free for all, dang it!!
http://staythetrail.org/
400crasher is offline  
The Following User Says Thank You to 400crasher For This Useful Post:
pwoodford7 (02-28-2012)
post #3 of 11 Old 02-27-2012, 09:30 PM
Administrator
 
doorfx's Avatar
ArcticChat.com Admin
 
Administrator
Join Date: Jan 2011
Location: calgary ab
Posts: 27,999
Thanks: 2,849
Thanked 2,617 Times in 2,402 Posts
Garage
ATV: 07 500 auto 13 700 XT trv
2010 Mileage: 800
2007 Mileage: 800
2006 Mileage: 800
Have you tried adjusting the pms. Usually a quarter turn is enough

Dynojet/142m/45p/3rd/3turns--Clipped and drilled--Unifilter--Easy adjust PMS--L.C.V. mod--AC Swaybar--Exhaust mod--2"Snorkels--Sanny shock bushings-- Airdam stage 1--PSC phase 2--21/ 23gr rollers--Dalton yellow spring--.7mm shim--Sanny Steerlites--RTR Flex Bracket--2 up seat / pegs--Tach--AC handguards--28" Outlaw mst's--Skull tailight--Skull shifter--Self Resetting Breakers--1" Wheel spacers--Customcncparts Steering Damper--AC deluxe handwarmers--6000k HID'S hi/lo--AC Deluxe Bumpers--Inline Fuel Filter-- O2 sensor \AFR guage--Black Magic Full Stainless Exhaust System--Wireless Winch Remote--29.5 Outlaws--Fox Podium X Rear Shocks--
2013 700 XT trv eps stock



It's mind over matter,If you don't mind,
It just doesn't matter

No Boost No Bottle
just balls and throttle
doorfx is offline  
Sponsored Links
Advertisement
 
post #4 of 11 Old 02-28-2012, 07:57 AM
Senior Member
 
Running Cat's Avatar
 
Senior Member
Join Date: Oct 2009
Location: Wadena, MN
Posts: 711
Thanks: 6
Thanked 36 Times in 35 Posts
Garage
ATV: Wildcat Trail; 700H1
2010 Mileage: 600
2009 Mileage: 600
2008 Mileage: 350
2007 Mileage: 200
2006 Mileage: 200
I have the same cold start problem. I just adjust the idle up about a quarter of a turn and that helps. Then I usually jump on and ride it/warm it up before the little man gets on. Then he is good to go! My son has been ridding all winter.

2014 Wildcat Trail XT: 29 inch Bighorns, 14 inch ITP 212, Kolpin Roof, AC Flip-up Windshield, AC Trunk Bag, 4k Viper Winch, Speedwerx Secondary Spring
2008 700 H1 SE: 28" Zilla's, Hand Gaurds, Hand Warmers, F/R Bumpers, Large Speedracks, Warn Winch, AC Gun Scabbard, AC Camo Cover, AC Chain Saw Lock, AC Cooler Holder, Eagle Snow Plow
2007 250cc
2011 150cc
2006 90cc

Last edited by Running Cat; 02-28-2012 at 09:01 AM.
Running Cat is offline  
post #5 of 11 Old 02-28-2012, 10:08 AM Thread Starter
Junior Member
 
Junior Member
Join Date: Sep 2011
Location: denver, co
Posts: 4
Thanks: 3
Thanked 0 Times in 0 Posts
yeah it started out dying on me at first and i would have to keep the throttle on it to warm it up, but if you let it idle even after warm it would die on me. Which in the summer time it cranked right up. Then it got worse and worse and now i can't even start the thing. I took the carb apart, cleaned it, actually put a new pilot jet in, the stock 40, cleaned air filter, exhaust screen. i adjusted the float. But now it wont even start at all, i just dont know where to go now?
pwoodford7 is offline  
post #6 of 11 Old 02-28-2012, 10:13 AM Thread Starter
Junior Member
 
Junior Member
Join Date: Sep 2011
Location: denver, co
Posts: 4
Thanks: 3
Thanked 0 Times in 0 Posts
thanks, i think i will try the 35, however you said to adjust the main too? what would u suggest to adjust it to?

thanks again
pwoodford7 is offline  
post #7 of 11 Old 02-28-2012, 10:16 AM
Administrator
 
doorfx's Avatar
ArcticChat.com Admin
 
Administrator
Join Date: Jan 2011
Location: calgary ab
Posts: 27,999
Thanks: 2,849
Thanked 2,617 Times in 2,402 Posts
Garage
ATV: 07 500 auto 13 700 XT trv
2010 Mileage: 800
2007 Mileage: 800
2006 Mileage: 800
Your main only controls 3/4 to WOT I don't think it will help your starting issue. Did you clean the starter jet ?

Dynojet/142m/45p/3rd/3turns--Clipped and drilled--Unifilter--Easy adjust PMS--L.C.V. mod--AC Swaybar--Exhaust mod--2"Snorkels--Sanny shock bushings-- Airdam stage 1--PSC phase 2--21/ 23gr rollers--Dalton yellow spring--.7mm shim--Sanny Steerlites--RTR Flex Bracket--2 up seat / pegs--Tach--AC handguards--28" Outlaw mst's--Skull tailight--Skull shifter--Self Resetting Breakers--1" Wheel spacers--Customcncparts Steering Damper--AC deluxe handwarmers--6000k HID'S hi/lo--AC Deluxe Bumpers--Inline Fuel Filter-- O2 sensor \AFR guage--Black Magic Full Stainless Exhaust System--Wireless Winch Remote--29.5 Outlaws--Fox Podium X Rear Shocks--
2013 700 XT trv eps stock



It's mind over matter,If you don't mind,
It just doesn't matter

No Boost No Bottle
just balls and throttle
doorfx is offline  
post #8 of 11 Old 02-28-2012, 12:04 PM Thread Starter
Junior Member
 
Junior Member
Join Date: Sep 2011
Location: denver, co
Posts: 4
Thanks: 3
Thanked 0 Times in 0 Posts
yeah that is what i was thinking about the main jet. The starter jet? isnt that the pilot jet? sorry i know enough about carbs to be dangerous.
pwoodford7 is offline  
post #9 of 11 Old 02-28-2012, 12:19 PM
Administrator
 
doorfx's Avatar
ArcticChat.com Admin
 
Administrator
Join Date: Jan 2011
Location: calgary ab
Posts: 27,999
Thanks: 2,849
Thanked 2,617 Times in 2,402 Posts
Garage
ATV: 07 500 auto 13 700 XT trv
2010 Mileage: 800
2007 Mileage: 800
2006 Mileage: 800

Read jetting 101 in the pinned section there are a couple good links with diagrams. Dynojet website also has a troubleshooting guide on their site

Dynojet/142m/45p/3rd/3turns--Clipped and drilled--Unifilter--Easy adjust PMS--L.C.V. mod--AC Swaybar--Exhaust mod--2"Snorkels--Sanny shock bushings-- Airdam stage 1--PSC phase 2--21/ 23gr rollers--Dalton yellow spring--.7mm shim--Sanny Steerlites--RTR Flex Bracket--2 up seat / pegs--Tach--AC handguards--28" Outlaw mst's--Skull tailight--Skull shifter--Self Resetting Breakers--1" Wheel spacers--Customcncparts Steering Damper--AC deluxe handwarmers--6000k HID'S hi/lo--AC Deluxe Bumpers--Inline Fuel Filter-- O2 sensor \AFR guage--Black Magic Full Stainless Exhaust System--Wireless Winch Remote--29.5 Outlaws--Fox Podium X Rear Shocks--
2013 700 XT trv eps stock



It's mind over matter,If you don't mind,
It just doesn't matter

No Boost No Bottle
just balls and throttle
doorfx is offline  
The Following User Says Thank You to doorfx For This Useful Post:
pwoodford7 (02-28-2012)
post #10 of 11 Old 02-28-2012, 03:16 PM
Senior Member
 
Running Cat's Avatar
 
Senior Member
Join Date: Oct 2009
Location: Wadena, MN
Posts: 711
Thanks: 6
Thanked 36 Times in 35 Posts
Garage
ATV: Wildcat Trail; 700H1
2010 Mileage: 600
2009 Mileage: 600
2008 Mileage: 350
2007 Mileage: 200
2006 Mileage: 200
I had a problem earlier when I cleaned the carb and somehow messed up the float. Always seemed like it was starving for gas. So I took it back apart and sure enough the float was not correct. Just a thought. Trail and error, trial and error until you get it right. good luck.

2014 Wildcat Trail XT: 29 inch Bighorns, 14 inch ITP 212, Kolpin Roof, AC Flip-up Windshield, AC Trunk Bag, 4k Viper Winch, Speedwerx Secondary Spring
2008 700 H1 SE: 28" Zilla's, Hand Gaurds, Hand Warmers, F/R Bumpers, Large Speedracks, Warn Winch, AC Gun Scabbard, AC Camo Cover, AC Chain Saw Lock, AC Cooler Holder, Eagle Snow Plow
2007 250cc
2011 150cc
2006 90cc
Running Cat is offline  
The Following User Says Thank You to Running Cat For This Useful Post:
pwoodford7 (02-28-2012)
Reply

  Lower Navigation
Go Back   ArcticChat.com - Arctic Cat Forum > ATV's > General ATV Discussion

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the ArcticChat.com - Arctic Cat Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









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.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Cold Weather Brendon444 XFR/Firecat/Sabercat 0 02-25-2011 03:21 PM
cold weather running dogs General ATV Discussion 3 12-12-2010 02:43 PM
Colorado weather Colorado650H1 General ATV Discussion 1 03-26-2009 09:04 PM
Cold Weather Starting kaw550 Z/ZL/ZR/ZRT/Tcat/EXT/jag/cougar 4 01-23-2009 06:47 AM
Jetting for cold weather Wicked King General Snowmobile Discussion 3 02-01-2007 02:37 PM

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

 
For the best viewing experience please update your browser to Google Chrome