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My atv is blowing fuel out of carb and I have spark what should I do next

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Blowing or dripping? if its blowing you have something wrong with your intake valve or timing. dripping you have a bad float or float needle

Posted on Dec 12, 2016

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Posted on Jan 02, 2017

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2007 Polaris phoenix 200, has new fuel cleaned carb,good blue spark,fires don't start or run,plug lil wet but not flooded or soaked


If you have spark at the right time, fuel, air.... you might try a spray of staring fluid. I would then check the compression. If it is too low it will not start.

Mar 31, 2017 | Polaris ATV

1 Answer

02 Kawasaki prairie fires but wont stay running. Please help.


You've got spark to get it to fire, but not enough air or fuel to keep it running. When you are starting the engine, your carburetor makes the fuel mixture richer, by reducing the amount of air in comparison to the amount of fuel it's sending to the engine (that's the "choke"). Then, when it's running the motor's vacuum rebalances the mixture to normal and that's when you conk out. Chances are it's a fuel delivery issue, without that choke the mixture goes too lean (not enough fuel).

You've probably been running standard gas with 10% ethanol. I have found that on older ATV's (like my 98 Honda), especially if the ATV sits for a month or two unused, ports in the carb clog with the residue from ethanol and it needs to be cleaned.

Unfortunately, you can't just spray something in the intake of the carb, you have to remove it and spray the cleaner into numerous ports in the carb and preferably blow them out with compressed air. If you're mechanically inclined, it's pretty easy, and costs almost nothing. However, ethanol also attacks rubber parts used in earlier carbs, possibly like yours, and that can mean replacing a couple parts, but rarely anything expensive.

Jan 10, 2017 | ATVs

1 Answer

I have a 2016 Polaris sportsman 570 she's got a fuel pump tries starting her she will keep winding over but won't start any help would be nice


Make sure the kill switch is in the run position.

AN engine need three things to run:
Compression
Timed spark
Fuel

now.....
1*. Check the spark plug to make sure it is firing.. remove the spark plug.. make sure you have metal to metal contact and then turn the engine over.. (this might be a two man job).. the spark plug should have a nice big blue white spark,,(some electronic's will have a weak orange and still fire fine!)
2. Make sure you have gas in the tank and (going into the carb/FI)... (have to ask-actually have had 3 bikes in my career come in complaining -won't start...!! Add gas and they ran.. WOW!.. never charged any of them....the embarrassment on their face was payment enough!)
3*. While the spark plug is out... place your finger over the spark plug hole firmly .. keep the spark plug cap away from your hand..turn the engine over and see if it will blow your finger off..(it should blow it off the hole easily).

If any one of these three are not nearly perfect.. you have an issue!!

Check these and repost with the results...

Dec 17, 2016 | Polaris ATV

1 Answer

Won't start, good battery, lots of spark,good gas, ran one day and not the next.


Hi Sandy:
Hmmmmm.
Something must have happened.
Back to basics.
Pull plugs, check for hot blue spark.
Plugs wet? Fouled?
If dry and spark then no fuel.
Drain/flush carb.
Change fuel filter.
Think of it as entertainment.
Cheers,
Happy New Year.

Jan 02, 2016 | Polaris 2008 Trail Blazer 330

1 Answer

Has good compression,getting fuel,plenty of spark, wont start


Then either the fuel is bad or it's flooded. Dry the plug, crank it without the plug to fry the cylinder & start with starter fluid to replace fuel. If it starts. Clean & blow out the entire fuel system, lines, pump,carb. Good luck.

Sep 21, 2015 | ATVs

1 Answer

My tomahawk 110 atv will not start. I have rebuilt carb , replaced spark plug and it cranked and ran fine until I opened it full throttle and then it started sputtering and diedand now Iit will not re


You need three things to make any gas engine run, in this order double check make sure you have proper timing set, spark and fuel. Could be bad gas or a bad ground from motor to frame.

Dec 02, 2014 | ATVs

1 Answer

My 1992 Bayou atv 350 sparks erratically. What do I test?


Popping thru the carb, usually means a blown gasket. The exhause gases are blowing thru the heads and back thru the intake.

Aug 30, 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

1 Answer

150 cc will not fire up


pull spark plug, lay it on engine while still connected and hit starter and see if any spark at plug. if so fuel issue,if sat for any lengthy period of time, pull carb. float bowl and clean bad fuel and resadew, unscrew brass looking jet and make sure clear,{should be able to blow air thru} ensure battery has full charge and should fire.

May 26, 2013 | ATVs

3 Answers

Hello, everybody! I have brought my 110cc Chinese atv to the shop many times and am sick of paying for this reason, I would love it if y'all who know how to fix atv's or motors help me with this probl


please 1. check fuses 2.check spark using a timing light then 3. fuel with a fuel pressure gauge if no spark replace ignition module; if no gas replace fuel pump

Feb 18, 2013 | ATVs

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