Snowblower Starts Then Stalls. The most common reason for a snowblower to stall is the carburetor is clogged and needs to be cleaned.
The fuel cap vent can become clogged, causing air to not enter the tank and a vapor lock will occur causing fuel not to move within the carburetor.
Also, leaving fuel in the tank for an extended period of time can become sticky and clog the carburetor.
Snowblower Starts Then Stalls
A clogged carburetor is most commonly caused by leaving fuel in the snowblower for too long.
A problem with the tank is the cap vent being clogged, which could cause a problem or lock as it prevents air from entering the tank and thus creates a vacuum/lock. This will stall your engine making it stop.
Issues With Fuel Caps
When fuel is consumed by the engine, the level in the fuel tank lowers.
To make up for it, there’s a small vent on the fuel cap that allows air to enter the fuel tank so that it can fill up again otherwise, there would be a vacuum or “vapor lock” and no fuel will get to your engine.
To test if this small vent on your cap is clogged, start your truck and try slightly loosening the cap and seeing if it continues running.
If loosening the gas caplets run without stalling then you need to check with a mechanic to see if they can replace it for you or tell you how to do that yourself.
Problem With Carburetor Repair Kit
If your carburetor is clogged, it could be caused by leaving fuel in the engine for too long. Over time, some of the fuel might evaporate while others remain.
The remaining portion could thicken up into a thicker substance that can eventually clog up the carburetor and cause your engine to stall out.
So if you think your carburetor is clogged, we suggest giving it a good cleaning with a carburetor cleaner. If cleaning it doesn’t work and you suspect the entire carburetor needs replacing or rebuilding.
Defective Engine Oil
Overfilled engine oil might have caused the problem. Oil spilling through the breather into the carburetor may occur if the engine oil is overfilled.
The carburetor should be removed from the engine, washed thoroughly, and placed on a dry surface if engine oil has seeped into it.
After a thorough inspection, replace the old idle speed control base gasket because this could be a sign of other problems with your car’s idling system.
After installation of the new gasket has been completed, tighten all components and recheck for leaks.
Spark Plug Failure
Inspect the spark plug for wear or damage. If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is visible buildup at the electrode, replace the spark plug.
To determine whether or not the spark plug requires replacement, use a spark test instrument to see if there’s a strong electrical discharge between its tips when cranking.
If there is no discharge (i.e. it won’t pass this test) then this indicated that it is certainly time to put in a new one; otherwise, you could end up risking nasty engine failure.
On a snowblower, how do you unclog the carburetor?
Remove the carburetor bowl, float bowl, and flathead. Spray and clean it with a carburetor cleaner so that you can remove any debris using a cloth.
This should help you to clean your snowblower in-depth from all impurities. Having done so, submerge the carburetor in a liquid carburetor cleaner to rid of any lingering grit which may have gotten stuck inside after the first step which was the spray-and-wipe approach.
Snowblower carburetors can be cleaned without removing them?
Turn the carburetor cleaner onto its side and spray it into the bowl. Let it sit for five minutes or so, then scrub it down with a cloth soaked in cleaner.
Take another cloth, soak it in carburetor cleaner and scrub out all of the holes on your jet until you are satisfied that they are clear. Finally, take a copper wire and scrub around the inside of each hole to ensure that everything is clean.
Snowblower Starts Then Stalls