Snowmobile Overheating – Causes and Prevention

Winter is a holiday season and a lot of people love to enjoy the snow and sports like skiing and snowmobiling in this season

A variety of activities can be done using snowmobiles. However, as these machines are similar to motorcycles, overheating is a common occurrence and can raise a concern.

Let’s look at the common issues with overheating and how to deal with them.

Can You Ride a Snowmobile If It Overheats?

Snowmobiles can overheat while idle when trying to warm up the engine. This phenomenon is universal and does not cause any harm to the engine. After cooling down a little, the snowmobile engine’s pistons will go back to the standard size and run smoothly.

Snowmobiles will continue to run if the engine is overheated a little during riding in ideal snow conditions, but beyond certain temperature limits (set on an average at 1800 F), the computer will shut down the engine automatically to prevent any kind of damage to the stator of the engine.

After cooling the engine down a bit, it can function normally and provide the optimal performance but is advised not to let the engine frequently overheat to prevent potential damage.

Snowmobile overheating

Do Snowmobiles Overheat on Ice?

Overheating can occur during riding, even in ideal snow conditions due to several reasons—for instance, the use of cheap insulation material for the stator coils of the engine. When the engine gets heated while riding at high speeds, the heat is retained, and the stator insulation might get damaged and cause the wires inside to short circuit causing the engine failure.

Also, some snowmobiles can overheat due to improper cooling of the engine. When running at low speeds, the engine may not drive the required power for the coolant to circulate enough and reduce the heat.

So, it is advised to run the engine at higher speeds/power, causing more snow to be thrown on the heat exchangers of the vehicle, which helps in better cooling.

Is Overheating Dangerous for Your Snowmobile?

Overheating is a common problem that can be caused due to a lot of reasons. So, preventing it by taking measures is advisable. But in case of the snowmobile overheating, it is possible to prevent any damage from happening to the engine.

If the snowmobile overheats during idling, there is no problem. The temperature will start dropping once the snowmobile starts throwing enough snow on the heat exchangers.

In case of riding in high speeds, it is common for the engine to get overheated and waiting for 30 to 40 minutes to let the engine cool down to normal temperature will prevent all kinds of damage. But when left unattended, it can become really dangerous for both the snowmobile and the rider.

What are the Problems Caused by Overheating?

Most snowmobiles are equipped with a light that indicates the engine heating status to the rider. In some models, the light flashes from time to time if the engine is hot and is on when the engine gets overheated. This way, the rider can cool the machine down by switching it off. But other models do not start flashing the warning light until the machine gets overheated and thus might be too late to protect the engine or other parts from getting damaged.

When the engine overheats, major damage-prone areas are the stator coils, engine pistons, or rings. The overheating of the pistons can cause engine seizure if not attended to after repeated overheating. It is also possible for the piston heads to break with repeated cycles of overheating, causing fuel and coolant to leak.

Causing leakage of snowmobile coolant due to the blowing of the pipes is also possible if the coolant tubes are not checked from time to time, as frequent overheating can accumulate damage to the walls of these pipes.

Causes of Overheating in Snowmobiles

Snowmobiles being similar to cars or bikes, the causes of overheating can mean many things. So, it is essential to make sure all the necessary components are checked before looking into other reasons for the overheating.

Oil

It can be very trivial to check for correct quantities of engine oil, but the lack of necessary oil can cause the fuel mixture to overheat the engine and, in the process, cause the piston heads and rings to melt and finally leading to engine seizure.

Coolant

Insufficient quantities of coolant and antifreeze in the engine can cause damage to the engine in various ways. So, it is necessary to check for the proper flow of coolant in the cooling pipes and look for leaks to prevent the engine from overheating.

Fuel

Using the right fuel is also plays a crucial part in keeping the engine integrity in check. Using fresh fuel is thus essential as fuel left out from the previous season might be filled with impurities. Leaving fuel in the tank for months together is also a problem as it can clog in the pipes and cause the engine to overheat.

When idling, overheating is not so problematic and can be caused due to a lack of snow to cool the heat exchangers. If running at low speeds or on low snow, there are possibilities of overheating as the engine does not receive enough coolant to remove the heat from it. When using the snowmobile for long trips at high speeds, genuine overheating of the engine is possible and is not problematic as long the engine is left to cool for some time.

If the heating problem persists, then looking into the engine components one by one for malfunctions or damage is necessary.

Few of them can be simple to solve like looking at the fuel-air ratio that the engine receives or the compression of the piston head. Other reasons like improper connections of the electrical components of the engine can also cause overheating of the engine components.

What To Do If Your Snowmobile Overheats?

As there are a lot of reasons for the engine to overheat, fixing the problem can be difficult if the cause is not identified.

Low Speed

It is important to maintain a minimum speed while riding as enough snow needs to be thrown on the heat exchanger to remove the heat from the coolant. Also, more coolant circulation is important for effective cooling, so using appropriate coolant for the machine is advised.

High Speed

In high speeds, causes of overheating can be excessive power from the engine. This problem can be solved easily by shutting off the engine and letting it cool down for a few minutes will ensure the prevention of any kind of damage to the engine components.

In case the problem persists even after, it is necessary to check for the basic components of the engine like the oil, fuel and coolant used. Ensure that all these are in check and do not cause the overheating.

If all these are perfect and the engine is still overheating, take the snowmobile to a garage and check the components one by one for signs of damage or incorrect connections which might be the cause of the problem and rectify it immediately with the help of an engineer or mechanic for smooth performance.

Other Additional Remedies

Use of an extra fan or radiator attached to the back of the snowmobile to help cool the engine for long rides. It is also good to use this method when the outside temperature is a bit higher.

When riding in thick snow, use can also use ice-scratchers under the tunnel to throw more snow towards the heat exchangers will aid in better cooling of the engine coolant and in turn the engine.

Also, please carry an emergency or an essential tool kit with you in your snowmobile whenever you go riding. You never know when it proves to be an indispensable asset for you in the middle of a breakdown.

Final words

Overheating of snowmobile engine is a common problem that can arise from many reasons mentioned above. So, it is better to keep the snowmobile well maintained to prevent any kind of overheating that occurs because of technical issues.

Taking a few remedial steps like installing a radiator or fan, using the appropriate fuel and coolants, and using scratchers can help in keeping the engine temperature in check and thus providing an uninterrupted and smooth performance. 

Vikas Kajla
Vikas loves winter. When there is snow, you can't find him inside the house. He'll be out probably doing skiing, snowboarding or maybe snowmobiling.

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