A forum community dedicated to Honda Fireblade motorcycle owners and enthusiasts. If the ATV starts when engaging the electric starter, it should start with a pull starter as well. Washing may have caused grit to enter the kill switch or starter button switch. Gas may go bad if it sits too long, or it may get contaminated with water due to condensation. it is the most common cause for no start on these, You probably used to much and screwed up the motor. The circle arrow without the X should be pushed in otherwise the bike will not start. Troubleshooting a fuel-injected ATV is a bit trickier than carbureted ATVs, but its possible: Most fuel-injected ATVs do not have a serviceable fuel filter. This guide will help you troubleshoot the most common causes for an ATV that wont start. Ask the customer to swap out some parts from one bike to the other bike. If so, youre not alone. Set the meter to 200.000. The steps differ slightly depending on whether your ATV has EFI (electronic fuel injection) or a traditional carburetor system. Hi, Im Haavard, the guy behind Boost ATV. The carburetor is responsible for pumping the fuel and mixing it with air at a precise measurement. You will have to fill the battery with electrolytes (battery acid) and seal it. These bangs are known as ATV backfiring, usually caused by the air/fuel ratio being too rich or too lean. To fix this issue, youll need to drain the excess fuel from the engine and then try starting it again.A weak battery can also prevent an ATV from starting with starter fluid. Then try starting the ATV as usual. This job may not be for everyone. The test light on the spark-tester will light up if there is a spark. With the right knowledge and troubleshooting techniques, you can get your ATV back up and running in no time. If the gas in the tank is old or contaminated, you should not put it back in the tank after cleaning the valve. To gain immediate approval and a NO ADS experience, consider subsribing to our Premium Membership. If the chain is too loose a popping sound can be heard and the ATV will jerk under acceleration, or the chain will just jump off altogether. How to adjust the air filter? My service manual says the engine has to be dropped?, really? You may need to do this 2-3 times before you succeed. This will help start the ATV under the aforementioned conditions. You will find a method for testing the stator in. After running your ATV completely dry, you may find it wont start even after filling it up with fresh gas. This will dissolve any gummed-up fuel still trapped in the system. I was able to get it to fire briefly when I sprayed some carb cleaner in to the carb. fireblades.org is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Pasted as rich text. This can be a result of either running too lean, or that the fuel and air mixture is too lean. Glad it turned out to be easy. Starter fluid evaporates very easily, and the vapor is highly flammable. The best way to test an electric fuel pump is by measuring the fuel pressure at the fuel rail. Use a multimeter to check for internal resistance between the positive and negative terminals. You might also have a burnt out electric start. Make sure the kill switch is turned ON.. Share your ATV photos, videos, ATV rides, get help with your ATV You should always consult your owners manual as the following tips may vary from ATV to ATV. The timing key is crucial in timing your bikes ignition as it locks the flywheel in the right position on the crankshaft. If the electrode is white, that can be a sign that your ATV is running too hot. Note that if you find contamination, such as dirt or gummed-up fuel at one spot, the whole system is likely dirty and needs a complete clean for the best result. ATV does have the ability to charge itself but slowly. removed the carbs, and cleaned the bowls and jets. If it doesnt, the engine might need an overhaul. If you have an account, sign in now to post with your account. wouldn't start (turns over, but. Then attach the negative lead to the negative battery terminal. If the pump is still not working, you may need to replace it. Note that some EFI ATVs also have an inline external fuel filter. There is either a vent in the gas cap or a separate gas tank vent tube. Adjust the screw with the spring on the side of the carburetor. For some reason, it will not fire on the gas in the carburetor. There should be a shut-off valve at the lowest part of the fuel tank. Disconnect the fuel line from the valve to see if gas comes through. It might be bad or maybe the carburetor came loose due to engine vibration. Simply loosen the lock nut and adjust the cable tension. Remove the rocker cover and ensure the valve clearance meets the spec. If the spark plug is still dry after cranking the engine for a few seconds, you know that fuel, for some reason, is not getting to the cylinder. Check the tire pressure to make sure it is appropriate to the size of the tires. bypassed the gas pump and raised the height of the gas tank. Install the flywheel and flywheel cover before trying to start the bike. Try to start again. Adjust it so the engine will idle at a fast enough speed to stay running. Join QUADCRAZY ATV Forum today for FREE! 3. It is usually located near the engine and has a small bowl-shaped part attached to it. I am thinking maybe fuel pump? Due to the backfire, you know that at least some fuel is getting through. If your battery is more than three years old, its likely time to replace it. The screen or filter is one component of the complete full fuel pump assembly located inside the tank. You can also see the small workings of the choke and butterfly valve. Test the resistance between the positive terminal of the coil and the spark plug. Check the wires behind the fuse holder and the charging jack. If the ATV starts when jumping the solenoid, you know that the solenoid is bad and needs replacing. If the oil level is fine, then the next thing to check is the fuel level. Use carb cleaner and a toothbrush to clean as much as you can. For it to work, you need to make sure it is getting power from the battery. Make sure there is oil getting to the piston and needle bearing areas. If its dirty or damaged, youll need to either clean or replace it. Turning it in too much will cause the motor to run lean at full speed and may burn a piston. The Ultimate Off-road Adventure [2023], Why Atv Batteries Are So Expensive? or could be low on compression. Heres how:1. If none of these steps work then you must replace your carburetor. Red wire with fuse casing, connect to the positive terminal (+) sing on battery. A solenoid that is working correctly will provide an audible click as you activate the starter. If the carburetor isnt functioning properly, it can cause starting problems and other issues with your ATVs performance. Grab the plug wire and hold the plug about 1/8th of an inch away from the cylinder head. I got it running and it ran fine. You can get one for cheap at most auto supply stores. You may also need to replace your spark plug. Check if any water has entered the fuse box, causing shorts. Make sure the ATV is in "Park" or Neutral. Both you and the ATV can catch fire from a spark caused by a short. A dirty carburetor may prevent enough fuel from getting to the cylinder, causing a lean backfire. If you still cant get your ATV to start, take it to a mechanic for further diagnosis. How to adjust the spark plug? First, you should use the positive lead to connect the positive battery terminal with the positive (red) starter cable. The same applies to gas contaminated with water, which is heavier than gasoline and will fall to the tanks bottom. Once the desired tension is achieved re-tighten the locking nut. In this blog post, well explore some of the most common reasons why an ATV wont start without starter fluid. To disengage the alarm simply press the unlock button twice. Trace the fuel line all the way from the fuel tank to the carburetor. Clear editor. Repairing a stuck valve is usually a task for a trained mechanic. 1st thing to try would be the CDI box, 2nd the coil, 3rd the spark plug, 4th the stator. Your link has been automatically embedded. Its much safer and just as effective to carefully pour or spray some gas straight into the cylinder through the plughole. Inspect the vacuum line to ensure it is correctly connected at both ends and has no cracks that will draw false air. The tether cord is located behind your vehicle. How do I adjust the carburetor? These are the main reason why an ATV will not start: To identify what is causing your ATVs starting issues, you must notice how it behaves when you attempt to start it. How to adjust the chain? Locate the pump by tracing the line coming from the gas tank. Built with Volusion. I hope it will help boost your ATV experience! If the information presented here contradicts your owner manual, then you should trust the manufacture and abide by their recommendations. Before they break completely, they may gradually weaken due to wear. They are run by vacuum/pressure pulses created in the crankcase. Disassemble the carb. If there is a leak, youll need to replace the fuel line. Ask the customer to hit the unlock button 2 times on the remote, make sure the tether is plugged in correctly before you try any troubleshooting if the customer has 2 of the same bikes. Youve just installed a new battery, but the ATV still wont start. You will also need to remove the cable coming from the solenoid. Most new ATVs would have a full charge and it would be displayed on the battery gauge. Begin by removing any plastic covers to access the top of your gas tank. sounds like you might still have some blockage somewhere in the fuel system. Make sure you squeeze the left handle brake while pressing the start button. The negative pressure pulls fuel in, while positive pressure pushes fuel out. This can include clogged fuel filters, dirty or faulty fuel pumps, or fuel lines that are kinked or blocked. This can happen if the carburetor float sticks open or if the fuel injectors are stuck open. Put a test light across the connection you are testing as you activate the starter. First, clean out the carburetor with a carburetor cleaner. Any excess gas will escape through the spark plug hole. Then try running the starter for several seconds or pulling the starter rope until the bike starts. This is frequently set at 1 full turn out. Its connected with a few bolts. Don't turn it in tight, just until it stops. Anyone know if I need a fuel pump? Make sure you're getting gasoline to your carburetor. If the task of aligning the timing marks sounds intimidating, you are probably better off leaving the job to a mechanic. You may need a set of large pliers to remove the ring as they tend to bind. If the spark seems weak, the problem may be with the pick-up coil. Use carb cleaner, fresh gas, and a toothbrush to clean the valve and mesh screen. If it does, you know it is getting power, and the problem is likely with the solenoid itself or possibly the starter. Alternative method: If you dont have a spark tester tool, you can do a visual test to check for spark. Fuel flows all the way undisrupted from the tank to the carb. Another possible cause of these symptoms is that your valve clearance is incorrect. Will idle at a fast enough speed to stay running until the bike starts removing any plastic covers access. 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