Fuel Leak - Yamaha Kodiak 700 Forum
 
Thread Tools
post #1 of 7 Old 10-26-2019, 08:57 AM Thread Starter
Junior Member
 
Join Date: Oct 2019
Posts: 6
Fuel Leak

Hello Everyone.. just purchased a 2003 Kodiak 450. Have a question about gas dripping out of the tube that comes out of the bottom of the carb.. looks like a overflow line that drains beneath the quad.. thanks
Jomas4109 is offline  
post #2 of 7 Old 10-26-2019, 10:32 AM
Senior Member
 
Join Date: Jan 2017
Location: Colorado
Posts: 697
Does it do it when the engine is running or just when it is off?

On my 2000 you had to shut the fuel off when the engine was off or it would drip fuel .

2016 Kodiak 700 base model with a few SE parts CV boot guards, receiver hitch, Grizzly bars. Trail Tech Striker speedometer/voltmeter. 501 Parts Electric Grabber locking diff
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
JimP is offline  
post #3 of 7 Old 10-26-2019, 01:30 PM Thread Starter
Junior Member
 
Join Date: Oct 2019
Posts: 6
I actually just bought the atv. Once I saw the gas leak, I shut off the fuel and haven’t started it since..
Jomas4109 is offline  
 
post #4 of 7 Old 10-27-2019, 11:22 AM
Member
 
Join Date: Jun 2019
Posts: 50
In all likelihood fuel is bypassing your needle and seat. It may not actually be the needle and seat itself but at the base of the part that holds the seat there is an oring that degrades over time. Easy fix. Had the same thing happen to my 04. Replace the oring and then connect to fuel source before reinstalling to ensure leak is repaired.
Laval is offline  
post #5 of 7 Old 10-27-2019, 12:03 PM
Member
 
Join Date: Jun 2019
Posts: 50
Forgot to mention to check your float to ensure it doesn’t have a leak. If the oring doesn’t fix your problem you will have to replace the needle and seat itself.
Laval is offline  
post #6 of 7 Old 10-29-2019, 11:05 PM
TRW
Senior Member
 
Join Date: Apr 2016
Posts: 323
Laval mentioned that you should look to see if the float has a leak, by that he meant if it has a leak, it will not float and therefore will not shut off the fuel flow, and gas will leak as you describe. Laval is also assuming that you can get into the carburetor bowl for those test. All great advice! Good luck.
TRW is offline  
post #7 of 7 Old 10-30-2019, 02:34 AM
Junior Member
 
Join Date: Mar 2018
Location: West coast of Sweden
Posts: 21
I had the same problem on my 400....It turned out to be some debris in the needle valve in the float house. By some strange reason Yamaha has not fitted an fuel filter on these machines, witch means even the smallest particles can make the needle valve not to seal. U must take of the carburetor and carefully dismantle the float valve, and I am quite sure U fill fix the problem. I did struggle with this problem for a while as it was coming and going, and I thought for a while that I had to change the needle vale due to wear, but it was just a small debris in it .

In addition U can fit an simple fuel filter on the hose from the fuel shut-of valve to the carb, just to prevent It will not happen again.
Attached Thumbnails
Click image for larger version

Name:	carb.JPG
Views:	9
Size:	47.0 KB
ID:	8282   Click image for larger version

Name:	ff-06_small.jpg
Views:	8
Size:	67.3 KB
ID:	8284  

Last edited by Tirill; 10-30-2019 at 02:36 AM.
Tirill is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha Kodiak 700 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



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 Off

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