UndeadCircus
06.05.2021 8:30:43
Continue your troubleshooting based on the results of this initial test.
See full version: ATV Won; t Start – Troubleshooting the Most Common Causes
Continue your troubleshooting based on the results of this initial test.
Not all ATVs have one, but if yours has a primer pump, you should use it to pump fuel back into the carb manually.
If Seafoam doesn’t work, your best bet will be to remove and disassemble the carb to clean it properly. This job may not be for everyone. Consider asking a mechanic if disassembling the carb seems intimidating. more
Fuel filters are cheap and easy to replace, so it’s worth doing if you suspect that something disrupts fuel flow.
When a motorbike sits for long durations, the fuel system might also dry out. Therefore, you should check the fuel lines to ensure that the gas is getting to your throttle body or carbs. more
Final Verdict
When this happens, it is likely that you will feel frustrated and disappointed by your motorbike. However, before you decide to call it quits and use an alternative vehicle to your destination, you should first try to understand why your motorcycle won’t start.
You’ll need quite a bit of money and time to fix these issues in comparison to the problems discussed above. Talk to an experienced motorcycle mechanic for help.
If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. more
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All models have the same wire colors for the ignition coil primary windings:
Orange --> Red/White <-- Gray [links]
Remove each spark plug, ground it against the engine, see if you have a bright healthy spark. (Don't crank the engine with spark plug caps not attached to the plugs, or with the plugs not grounded to the engine, you could damage the coils.) here
The easiest place to start is with the air filter. If a lot of gas has got in the crankcase it can easily pump an oily mess into your airbox through the crankcase breather. Or maybe some rodent or insects have set up house in there. If you do find an oily mess, see the Carburetor sections of the Repairs and Maintenance Tech Tips for information on how to correct this problem with the petcocks and/or carbs. Obviously you'll need to change your oil and filter, and your plugs might be fouled as well.
There is fresh gas in the tank, yes? Is the petcock in the On or Res position? Try the Prime position too.
Confirm you have fuel flow from the petcocks. Checking this depends on whether you have a Standard or Special (including XJ), and if you have a Special or XJ, whether or not you have the stock octopus ("Diaphragm Assembly") . If you have the octopus, see the testing the Octopus tech tip. If you have a Standard, the petcock will not flow with no engine vacuum - if the bike is cranking good, there should be enough vacuum to allow fuel to flow. Remove fuel line from petcock (standards have the vacuum line going to one petcock tap; other models flow from both taps). Crank the engine and see if fuel flows from the tap. Alternatively, remove the vacuum line as well (from the vacuum nipple) and give it some mouth vacuum action. If no fuel flows, you need to remove and fix whatever the problem is with the petcocks. (see links above) If you have a Special or XJ with no octopus, fuel should flow freely from either tap in any but the Off position. Check the fuel hoses for kinks or blockages. more
Either your petcocks are okay, or you've fixed them, and the bike still won't start! - now what? You could check for spark now, or verify fuel flow - you should be able to reach the float bowl drain screws on the bottom of each carburetor. Loosen each screw, and use a small clean glass container to catch what comes out, you are looking for water or crud in the bowls. You can just use a rag to catch the gas, looking for crud. (Early in my bike's life - less than 1000 miles on it - it wouldn't start one morning - the XJ has a convenient float drain screw with nipple, easier to catch what comes out, and there was a lot of water from a gas station I never revisited. One flush of the bowls got rid of the water, and it fired right up.) Turn the petcocks to Prime and try again. more
Whether you’re a seasoned motorcycle rider or new to the game, we can all agree that having trouble starting up a motorcycle is one frustrating gig.
How to fix it: all you need to do is simply replace the spark plug wire. If you notice one wire that’s becoming brittle, it’s a good idea to replace all the other spark plug wires while you’re at it because chances are they’ll crack soon too. [links]
If you have a kickstarter, putting it into neutral and not being able to kick start it (meaning you can’t move the kick starter at all) could mean your engine is seized or you have a bad transmission.