How To Test A Snowmobile Fuel Pump

A snowmobile can be used for a few different things including fun, work, and even as a way to get from point A to point B. Although you can use it a few different ways, you will want to ensure it is working properly before you do use it. After all, you don’t want to be out in the snow having fun, or working to plow the snow, or even using it to get from one place to another and it break down on you while using it. That is not fun at all. Keep reading to learn how to test fuel pumps so you can use your snowmobile the way it was meant to be used.

Step One: Remove The Engine Cover

Your first step in testing the snowmobile fuel pump is to remove the cover to show the fuel pump and the carburetor. This could be as simple as just removing the cover or you may have to unbolt it.

Step Two: Removing The Fuel Tank Tubing

Your next step in testing the fuel pump is to take the tubing that is keeping the fuel tank and the fuel tank inlet connected. You will then connect together the vacuum gauge to the fuel tank inlet.

Step Three: Start Your Engine

Now you need to start the engine. After starting the engine, check the gauge to ensure the vacuum is reported while the engine is running.

Step Four: Remove More Tubing

Now you have to remove more tubing. You will need to take off the tubing that goes to the crankcase on the engine. Once you do this, check to make sure there is a pulse coming from the hose.

Step Five: Removing The Line

Now you will need to remove the line that is attached to the carburetor from the pump. Now you take your testing gauge and attach it to this line. You will then need to ensure there is pressure while the engine is running.

Important Things To Remember

There are a few things you need to take note of while testing the snowmobile fuel pump. If you don’t find a vacuum on the fuel intake part of the pump, then the fuel pump is bad. However, even if you do find a vacuum on the intake and there is a pulse coming from the crankcase, but if there is no pressure coming from the carburetor line, your fuel pump is bad. Now, if everything seems fine, you should also check to make sure there aren’t any cracks or leaks coming from the tubing.

Instead of buying a replacement snowmobile fuel pump, which can be expensive, you can just buy a repair kit to fix the fuel pump that went bad. These don’t cost nearly as much as buying a brand new one and can save you a lot of money.


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