Fuel Petcock

This is a discussion on Fuel Petcock within the Repair and Maintenance forums, part of the Suzuki ATV Technical Discussions category; There's been a lot of talk lately about fuel problems, and well lets face it it's gonna happen. And in this thread I'm gonna discuss ...

Go Back   Suzuki ATV Forum > Suzuki ATV Technical Discussions > Repair and Maintenance

Repair and Maintenance Having problems? Doing a rebuild? All Repair/Maintenance Discussions here.



Closed Thread
 
LinkBack Thread Tools Display Modes
Old 05-27-2012, 02:21 PM   #1
Super Moderator
 
ajl719's Avatar
 
Join Date: Jan 2010
Location: Iroquois Falls On, Canada
Member #514
Posts: 4,772
View ajl719's Photo Gallery() Send a message via Yahoo to ajl719
Fuel Petcock

There's been a lot of talk lately about fuel problems, and well lets face it it's gonna happen. And in this thread I'm gonna discuss one of those things related to fuel and that's the fuel petcock. When it comes to fuel issues a lot of people sometimes dismiss the fuel petcock as a potential source to their problem. The fuel petcock is a vacumm operated system which works in conjunction with the lower pressure fuel pump. Here's a pic of the fuel petcock:

Click the image to open in full size.

You'll note that the fuel petcock has 3 settings, On, Pri, Res. In the ( On ) position fuel will only flow if the engine is running. This is because the fuel petcock has a diaphragm in it which prevents fuel from flowing when the engine isn't running. This diaphragm can also cause poor running conditions if it dries out or goes bad. In most cases it is noticeable by poor idling, stalling, etc. Though in some cases it can sometimes lead to fuel flowing when the engine isn't running, thus allowing fuel to enter the crankcase and contaminate the oil. If you suspect the fuel petcock is at fault pull the vacumm line off the petcock and if you have fuel in the line or fuel comes out the petcock where you removed the line then it's bad.

When set in the ( Pri ) position fuel always flows regardless of if the engine is running or not. This is because when set in ( Pri ) position fuel bypasses the diaphragm and runs straight to the carburetor. This is a good test to do if you suspect the fuel pump isn't working. Note: If you do this return the valve on the petcock back to the ( On ) position when the bike isn't running, failure to do so may result in fuel entering the crankcase and contaminating the oil.

And when set in the ( Res ) position fuel is being drawn from your fuel reserve. This should only be used if you run out fuel and need to use your reserve.
__________________
2000 Suzuki King Quad 300 4x4
K&N Air Filter
2300 lbs Superwinch
Kenda Bear Claws (Rear 25X10-12) - (Front 24X9-11)
Differential Lock Mod
12,000 + km/s

Last edited by ajl719; 06-27-2014 at 12:38 PM. Reason: New Image Insertion
ajl719 is offline  
Closed Thread


Search tags for this page
how a suzuki eiger peckcock works
,

how to check atv petcock

,
repair atv petcock
,

suzuki atv petcock

,

suzuki eiger fuel petcock

,

suzuki eiger petcock problems

,

suzuki king quad 300 petcock diaphragm

,
suzuki king quad petcock problems
,
suzuki king quad petcock valve settings?
,

suzuki ozark petcock

,
what does pri stand for on a suzuki atv petcock
,
what does pri stand for on susuki ozark
Click on a term to search our sites for related topics.

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Vaccum petcock zukifreak ATV Parts for Sale 0 02-25-2012 07:55 PM
2003 ozark petcock MartinD Repair and Maintenance 2 12-22-2011 11:27 AM
petcock diaphram rabbitrandy Repair and Maintenance 4 07-11-2011 02:35 PM
Fuel problem? Shepjs Repair and Maintenance 0 04-07-2011 02:38 PM
Fuel additive zukifreak Repair and Maintenance 1 12-20-2010 11:58 AM

» Discount Tire
Motosport.com

Powered by vBadvanced CMPS v3.2.2
All times are GMT -6. The time now is 07:56 PM.
Looking for information on other ATV Manufacturers? Head on over to visit our friends on these other forums specializing in the following:
Kawasaki ATV - Can-Am ATV - Polaris ATV - Suzuki ATV - Yamaha ATV - Honda ATV

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.