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Fuel coming out of bottom of carb - Polaris ATV

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My brother and I have decided that this problem on our 4-wheelers is due to using gasoline that contained 10% ethanol. We were told that it wasn't good for small engines,

Posted on Nov 14, 2010

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Posted on Jan 02, 2017

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My idler screw on my ares 125cc four wheeler doesnt change the idle, it keeps shutting off because the idle isnt high enough. Any suggestions


Hey Scott, you might have more issues than just an idle speed, have you installed a new spark plug lately?.. had the carb cleaned and set by a qualified professional... have your cleaned or replaced the air filter?
Try these steps first.. then reply to me.

Jun 15, 2017 | ATVs

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Fuel will not flow to carb


If you have the fuel petcock (valve assembly attached to bottom of fuel tank) to either 'on' or 'reserve' and no gas is flowing through the fuel line - the most likely culprit is either a) petcock itself is clogged or the filter inside the tank that is attached to petcock is clogged or b.) you could possibly have a malfunctioning fuel cap. The fuel caps are usually vented to allow excess pressure to vent off. If for any reason that fails - then basically it becomes a vacuum issue. You could try loosening the fuel cap - not completely removing - just loosen and see if the flow starts - if so, it's your cap. (Some you could shake to test function - you would hear a rattle if the mechanism was still good - not all though). If loosening cap doesn't help and you're sure you're in correct position - you'll have to remove that assembly. Two screws or bolts usually hold petcock to fuel tank. Remove those two bolts, usually a rubber o-ring type gasket or another type of gasket - and a tube/filter is attached to petcock. As you remove you'll see exactly what I'm talking about- that's actually your fuel filter/reason there is usually not an external fuel filter. IF it's not clogged - the issue lies within the petcock itself. Some are able to be disassembled, cleaned and reassembled - if not/replacing would be only option. These tips are assuming that you've removed fuel line from carb - if not, please check with fuel line removed - if you're still hooked to carb, but are sure there is no fuel flow - and fuel does flow when unhooked/clogged port to carb or your float is not functioning properly allowing fuel to enter carb. All The Best & Good Luck

Sep 07, 2016 | ATVs

1 Answer

Why is gas dripping/runnng out bottom overflow line of carb?


Could be one of the carb floats is stuck or the rollover caused it to come off its mounting position. As fuel enters the carb, the float rises with the fuel level until it reaches a position that shuts off any more fuel entering the float chamber and prevents an overflow. Fuel level drops, float drops and fuel flows again. Basically like the cistern in a toilet.

Feb 11, 2016 | ATVs

4 Answers

Why does the carb keep flooding?


In the absence of something like a faulty or porous casting of the carb allowing fuel to bypass the float valves then sticking or leaky float valves, sticking or punctured floats or an excessive fuel line pressure must be the problem.

Where no isolating tap is fitted to a gravity feed system the float valves must be virtually perfect and the only way to ensure perfect seating is to examine the surfaces under a strong magnification and then verify correct seating by using a vacuum pump and gauge.

An excessive line pressure can be caused by a blocked fuel tank breather.

Apr 19, 2015 | ATVs

1 Answer

Have a 88 polaris trail boss. dosnt have any hoses hooked up to carb. cant find anything telling me how hoses are supposed to be ran. any help


There is usually only one hose connected to the carb... it goes from the fuel tank-=fuel filter to the carb at the top. The hose is s similar diameter used in lawnmowers and sold by the foot. There is a cable from the throttle which is tricky to get on sometimes as there is a spring on it. If you've never owned a motorcycle of removed throttle cables before, get with someone who has. The needle valve is visible protruding from the bottom of the throttle cable. There is a keeper clip on it and it sets on a particular groove on the needle valve.

Feb 28, 2015 | ATVs

2 Answers

My 2006 Honda rancher 350 just quit running while I was driving it. will still turn over but wont start why?


Take fuel cap off to make sure it is getting air to fuel tank. Check fuel valve to make sure it is on. Drain carb with screw on bottom of carb to check for water. Pull spark plug to make sure it is firing.

Feb 15, 2015 | Honda 2006 FourTrax Rancher AT

1 Answer

My 2001 sportsman 400 will not go over 20mph what should I do?


replace fuel filter. check spark plug. fuel has waste in it bad fuel maybe.. has it been setting a long time. remove sediment bowl from carb. should at least drain the carb and catch the fuel from the drain. examine fuel caught for bubbles in bottom of fuel container. air filter clean? adj timing ? does it smoke when running? backfire? choke off ?

Jul 13, 2014 | Polaris 2011 Sportsman 400 H.O

1 Answer

I just bought a mud blaster 110cc quad for my son, why does it start then 2 min later stop even with feathering the throttle?


#1 sounds like a fuel delivery system issue. Make sure the fuel tank flows freely to the carb. (remove the fuel line from the carb--from the gas tank and turn on the petcock--gas should flow freely) The needle and seat may need to be cleaned or replaced, this controls the flow of gas into the float bowl of the carb.(remove the drain screw from the bottom of the carb (with everything properly assembled- petcock on)..gas should continually flow through the bottom of the carb --10-15 seconds of continual gas flow will make sure its flowing properly! Both of these sound like a solution to your problem.

Jun 22, 2014 | ATVs

1 Answer

ATV Yamaha Grizzly 350 2007 will not start


Sounds like it has sat for a while and your jets are gummed in the carb there is a you tube video on this topic that will walk you through the repair other thing to check turn fuel tank valve to off position remove fuel hose at carb slowly turn valve on to see if you have fuel to the carb if there is fuel there turn valve off install hose back on carb remove remove hose at tank valve now on the bottom of the carb you will see a plug or screw loosen this ( there may be fuel running out of drain hose have a bucket to catch fuel) now on the hose at tank valve blow threw it ( do not use air compressor) air should blow freely if it dose not your needle valve is stuck and there is no fuel getting to the carb or stuck float or a hole in the float and full of fuel

Dec 23, 2013 | Yamaha 2007 Grizzly 350 Auto 4x4

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