Tag Archives: four-wheeler

My ATV Won’t Start – Troubleshooting

ATV front close up

ATV won’t start? Not sure where to start examining? Let’s check out the main reasons why the ATV may not start.

Unfortunately, the gear of any manufacturer sooner or later begins to be capricious, no one is immune from this. But finding a malfunction and starting an ATV that won’t start is not so easy, especially if you are far from a service station. This could be challenging, especially if you’re about to take part in ATV races, you need to find the defect right away.

As trite as it may sound, the first step is to check the presence of gasoline in the gas tank. Believe me, very often people try to start an ATV with no gas.

Check if the engine power button is off, it is usually located on the left side of the steering wheel, and also pay attention to the fuses, one of them may have burnt out.

Next, take a multimeter and measure the battery charge level of the ATV: a charged battery should produce from 12.6 to 12.8 volts and turn the starter confidently if the battery is discharged, power it.

You also need to pay attention to the battery terminals, they must be clean and not oxidized, and the clamping bolts must be tightened properly.

If you notice that the starter does not turn, when trying to start the ATV, you must first check and, if necessary, replace the starter relay. To check if the starter itself is in good condition, you need to make sure that the engine mass is in good condition (oxides, no contact, wire damage) and apply a plus to it directly from the battery (observing the polarity), if the starter is twisted, look for a problem in the wiring. If there is no reaction to your actions, most likely the starter is out of order.

Check spark plug condition and spark itself. If you notice a significant variation in spark plug color, you may need to adjust the carburetor of your ATV.

In order to check for the presence of a spark, it is necessary to unscrew the spark plug, insert it into the spark plug cap, lean it against any metal part of the ATV (do not forget about safety precautions: there should be no gasoline leaks nearby) and turn the starter, the spark should be confident and clearly visible. If there is no spark, it is necessary to replace the spark plug. If the spark does not appear, check the wiring and also replace the ignition coil.

Make sure your ATV air filter is clean and soaked and the air tube from the filter to the carburetor is not damaged or clogged.

Determine if gas is flowing into the carburetor, if the gas filter is clean, and if the gas pipes are intact. Clean the carburetor with cleaning fluids and blow out the passages.

Determine if the gas pump is working properly. After turning on the ignition, the sound of turning on the gas pump and pumping gasoline into the gas system should be heard. It is also necessary to check the performance of the gas pump relay.

A very common reason for poor engine start-up is a worn piston and, as a result, poor compression (as a rule, this applies to ATVs with decent mileage), you can measure the compression with a special device called a compression meter.

Quite often, the ATV starts badly in winter, but there is a set of techniques that greatly facilitates the start of the ATV.

These are perhaps the most common malfunctions that prevent the ATV from starting. We hope that the provided manual was useful for you. In addition, when choosing a new ATV, do not forget to check if everything works well, so you could ride with no probs.