No fuel to carb? - Polaris ATV Forum
Polaris Sportsman Discussions for the Polaris Sportsman 90, 300, 355, 400, 450, 500, 550, 600, 700, 800, 850

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 08-10-2019, 03:34 PM Thread Starter
Junior Member
 
mk117's Avatar
 
Join Date: Dec 2018
Location: Minnesota
Posts: 14
No fuel to carb?

I'm stumped on this one. Ran the ATV a few weeks ago, came back today to run it and it wouldn't start. I sprayed some starting fluid in the air intake and it fired up long enough to burn off the ether, so I'm getting a spark. I pulled the carb apart and everything is clean and moves. I'm pretty sure it's getting fuel because the line in to the carb will get fuel in it after I drain it to check. But when I try to start it without starting fluid I get nothing. No sputtering or any signs/sounds of combustion.
2004 Sportsman 400. Any thoughts about what to try next?
mk117 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 08-10-2019, 08:44 PM
Premium Member
 
stave7119's Avatar
 
Join Date: Oct 2013
Location: Lena, IL
Posts: 3,346
It seems that you are getting fuel to the carb but not into it. Take a look at the needle valve. Either the valve is stuck closed, something has plugged the passage or the float is stuck. You can check to see if it is getting fuel into the carb by opening the drain at the bottom of the bowl. If nothing comes out, pull the carb. If you do get a good amount to drain out, then the carb isn't working right. Plugged jet or something. Low compression can cause this problem too. Ether is more volatile than fuel and it will run on that but not gas. Seems odd, but check your compression and be ready to adjust the valves.

Mine: 2018 Sportsman 850SP - 26" Bear Claw HTRs on OEM steel wheels(I really don't like the Aluminum ones)
Polaris Hand warmers, Mirrors.
Hers: 2019 Sportsman 450. 26" Bear Claw HTRs on Moose 427X Wheels.

2007 Sportsman 500 EFI, Polaris Winch, 25" Bear Claws QSC Clutch Kit, Hand Warmers
2001 Magnum 325 MOSE 12" rear wheel conversion. 25" Sedona Coyote tires
2017 Polaris Ranger 1000XP - Roof and front glass
2018 Kawasaki KLR650
2001 Magnum 325 Warn winch and Moose 60" plow-Sent to Daughter and Son-In-Law since his blew up
SOLD 2004 Sportsman 600 Twin
stave7119 is online now  
post #3 of 4 (permalink) Old 08-11-2019, 07:12 AM
Polaris ATV Legend
 
latebird's Avatar
 
Join Date: May 2014
Location: Illinois
Posts: 4,355
Leave the fuel line off the carb and start the engine on ether to verify the fuel pump is pumping - it should pulse fuel fast enough to fill a small baby food jar in 5 to 10 seconds

Shop Owner and Mechanic with over 50 years experience
latebird is online now  
Sponsored Links
Advertisement
 
post #4 of 4 (permalink) Old 08-20-2019, 04:36 AM
Junior Member
 
lazypengu1n's Avatar
 
Join Date: Aug 2019
Posts: 3
Quote:
Originally Posted by latebird View Post
Leave the fuel line off the carb and start the engine on ether to verify the fuel pump is pumping - it should pulse fuel fast enough to fill a small baby food jar in 5 to 10 seconds
Definitely this first before messing or changing anything else. I recently got a 2000 500 and it was not getting any fuel. Turned out to be the pump since I was getting gas from the tank in the hose but nothing to the carb.
lazypengu1n is offline  
Reply

  Lower Navigation
Go Back   Polaris ATV Forum > Polaris Model Specific Discussions > Polaris Sportsman

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Polaris ATV 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










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



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