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My 2012 king Quad 400 ASI (air cooled, fuel injected) breaks down when hot (starts missing, stops and will not start), I use it for mustering cattle, day temperatures are now around 40 degrees celcius

Cleaning the fuel filter sometimes seems to work but this may be because the bike cools down during the time it takes to clean the filter, cleaned air filter,I triple filter all fuel going into the bike

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  • Contributor
  • 14 Answers

If you are around and running through water, as I would be working cattle, check for water build up around spark plug and boot. Had it happen here, hope this is helpful.

Posted on Nov 24, 2014

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Posted on Jan 02, 2017

  • 74 Answers

SOURCE: 1995 honda cbr f3 wont start

I would think about investing in a carb re-build kit.

Posted on Dec 22, 2008

  • 1 Answer

SOURCE: zzr 600 carb probs

The fuel tanks are common to rust through, maybe that is where the dirt is from.

Posted on Apr 16, 2009

  • 269 Answers

SOURCE: setting the timing 2002 road king fuel injected

Your bike's timing can only be adjusted through an interface to your ECM like the Screamin Eagle Race Tuner. Have you made any changes to the exhaust or intake? Have you added and aftermarket item like a Power Commander? changes in these areas could account for the problem you are having. hope this helps.

JP

Posted on Sep 07, 2009

wd4ity
  • 4565 Answers

SOURCE: Harley spits and sputters.

Unless an aftermarket device has been installed on your bike, you must take it to a dealer to get the fuel map reworked.

Posted on May 03, 2010

techcertfide
  • 26 Answers

SOURCE: I have a 98 timberwolf.

so if you find your quad his much harder to start after the engine is warm every time then you may very well have tight valves. Which would require a proper valve adjustment. also your valve adjustment should be easy as they are screw and locknut adjusted. hope that helps!

Posted on Nov 16, 2010

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2 Answers

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

1 Answer

My Linhai 100 atv doesn't idle rite n the bike when riding revs real high n sticks or real low n sticks


Sounds like a air leak maybe.,.or a sticky or kinked throttle cable check that lube or replace .,.clean your air filter, and intake ,and carb / fuel injection parts., tune it up?

Jan 07, 2017 | ATVs

1 Answer

My 100 cc quad doesn't idle rite and the bike revs real high when riding n sometimes stuck at real low could it be carborator or transmission


Clean air filter an stuff intake, and check for leaks around intake boots ( cracks,dry rot , loose or fallen off hoses. Tranny most likely fine. Check belt drive could need new belt also

Jan 07, 2017 | ATVs

1 Answer

I want to get a Jonway 150 quad going after sitting for a while. What do I do first?


Hi, Wernich if your bike has been sitting idle for months or years and you did not do any pre-storage maintenance I feel your pain it will probably have a dead battery and not want to start or if it starts it will idle and run poorly then stall, here are the following steps necessary to complete in order to get your bike back to an acceptable running condition.
1. If your battery was 2-3 years old when you last had the bike running you should replace it.
2. If you believe your battery might still be serviceable remove it from the bike and put it on a 1 or 2 amp trickle charger for 24 hours. If it is the old lead acid type with visible cells and acid levels fill each cell to the top line with distilled water and replace the caps, run the vent tube into a plastic or styrofoam cup, any cells that are cloudy/milky replace the battery.
3. After charging remove the leads and let the battery sit for a couple of hours then check the battery voltage with a volt meter, you should have 12.5 volts or better, any readings in the 11 volt range you need to do a proper load test on the battery and replace as necessary, any readings in the 10 volt range you have a dead cell and the battery needs to be replaced.
4. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
5. Remove and inspect your air cleaner paper elements that are not oil soaked can be cleaned with a soft brush and low pressure compressed air, oil soaked elements must be replaced. Gause mesh and foam elements can be cleaned by soaking them in a container big enough to completely cover them with a solution of 1 gallon of water and 1 oz. of Dawn dishwashing liquid for small and medium size elements, for monster size double the formula and let soak for at least one hour then rinse with warm water shake off excess and let air dry, "WARNING" do not use compressed air as this will embed micro-sized dirt and road grime and destroy the mesh pattern and stretch foam elements out of shape just squeeze it like a sponge and let air dry, use a fan if you're in a hurry. When completely dry spray a very fine mist of air filter oil evenly around the whole element.
6. Remove the carburetors, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
7. Remove fuel valve and filter disassemble and clean as necessary, remove, clean, and inspect fuel and vacuum lines and replace as necessary.
8. Replace spark plugs with new ones and check for spark.
Good luck and have a nice day.

Dec 29, 2016 | ATVs

3 Answers

Why won't it idle without choke?


Fuel supply problem somewhere. How is the float adjustment and the float valve? I'd guess the level adjustment is too low.

Mar 28, 2015 | Honda 2005 TRX 400EX

1 Answer

Econ Quad Viper 70 4 stroke won't stay running unless choke is one quarter or more closed. Occasionally pops through carb and bogs down if accelerated.


Hi Linda... Clogged carb jets and be a problem. Cleaning them is often very difficult due to the size of the orifice. sometimes welding tip cleaners or sewing needles may work. Forcing air is a good way but the acid test is to look into the orifice to verify you see light.

Another thought: Sometimes the fuel caps stops venting and the motor will act like its running out of power, rightfully so as it's running out of fuel. The vent in the fuel cap can be partially plugged or completely and the engine will act accordingly. Best way to test this is to remove the fuel line after the petcock(off/on valve) and watch that it flows fuel well. Also check the petcock filter to verify it's not clogged and check the fuel line to make sure it's not crimped.

You're problem doesn't sound electrical but I'd try to eliminate all fuel related problems first before moving to electrical as electrical trouble shooting can be a bear.

The air mixture adj screw sometimes has an "O" ring and sometimes not. Check with parts fiche for your model carb to know which.

Dec 21, 2014 | ATVs

1 Answer

2012 1700 classic vulcan exhaust


The VTX 1800 is fuel injected which requires the additional sensors (oxygen, throttle position, etc). However the VTX 1300 is carbureted, which takes the sensors out of the equation. If you are changing the exhaust with a:
Slip on-muffler
  • remove old mufflers, and slip on new ones
  • could add a better air filter, and you get a better sound, minimal power gain
Full Exhaust System
  • Remove old pipes from the cylinder heads (i.e. jugs) and use a rag to wipe off the seat and block the opening.
  • once both pipes have been pulled from the jugs, prep your new pipes with windex. Clean them well, finger oil and other gunk can cause bluing spots
  • Install the pipes, torque them in place, re-clean the pipes and use a chrome polish.
  • Purchase carburetor jetting kit, and either take it to a shop to do it, or you do it. If you have never re-jetted a carburetor before, I suggest you go to a reputable shop and get it done.
  • With the carb completed, a new air filter (high flow K&N is what I use - I have gone through the same exhaust system replacement procedure on my sled)
If you replace the exhaust without completing the carb/air cleaner, there is a very high probability that you will get backfires every time you ride. This will happen especially on deceleration, and will eventually blow out your valve seat, causing the engine to feel weak due to lost compression.

Feb 06, 2014 | RTO 200cc Full Size Four Wheeler ATV

2 Answers

Have put new fuel pump on ,cleaned carb,new plug, gets gas plug fires but won't start, checked compression at98# don't know what else to do .


The battery voltage on a Suzuki I had would drop low enough during cranking with the electric starter motor not allowing the spark to be strong enough to run, the voltage regulator also didn't function correctly once and as the battery voltage dropped during operation engine would start to bog down and cut out due to low voltage for the ignition system.

Jul 18, 2013 | ATVs

1 Answer

Raptor 660 starting problem...new plug, new hoses, new oil, new radiator, rebuilt water pump, rebuilt thermostat, cleaned carb, cleaned all jets, cleaned petcock, cleaned fuel filter, turns over fine,...


Hey Josh,
Cleaning a carb is a little more that most people realize..it takes someone with knowledge and training to really do one right... take it to a professional..

Jun 23, 2017 | Yamaha 2010 Raptor 90

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