A Ferris Lawn Mower is Smoking because of This (Black, Blue & White Smoke)

Seeing smoke billowing from your Ferris mower is a scary sight. You could be alarmed by the prospect of an imminent and expensive repair, but the situation might not be as dire as it seems at first.

When you observe smoke rising from the mower, the first thing you should do is to turn it off right away. If your mower is smoking, turn it off immediately.

When the air filter is clogged, the oil level is too low or too high, the gasket is faulty, creating an oil leak, or there is internal engine damage, such a problem with the valve train or piston rings, the Ferris lawn mower may begin to smoke.

Once the engine has cooled down, the spark plug wire can be removed for inspection and maintenance. Observe all of the security measures outlined in your Ferris’s handbook.

A Ferris Lawn Mower is Smoking
A Ferris Lawn Mower is Smoking

Before diagnosing, repairing, or operating, be sure you’ve read and understood all of the safety recommendations in the equipment’s operator’s handbook. If you are unsure of how to proceed, lack the necessary knowledge, or are unable to execute the repair properly, you should seek the advice of a professional.

Causes of Smoke from Your Ferris Zero-Turn Mower

Ferris lawn mowers may smoke if their air filters are clogged

The use of a zero-turn mower is not a tidy endeavor. Garbage is flung across the environment. You will be surrounded by a cloud of dust amid extremely dry, dusty circumstances with poorly covered grass.

If the air filter is not periodically inspected, cleaned, and replaced, it may become clogged due to these factors. If your filter is clogged, your engine won’t get enough air to keep running.

As a first step, you should never operate your mower without an air filter, not even temporarily. Damage to the cylinder and engine seals can be caused by dirt and debris entering the engine through the air intake if a filter is not present.

Second, make sure the air filter is clean before each time you use your mower. Each mowing season, I always buy a new air filter and maintain it by cleaning it numerous times.

Checking the filter on your mower before using it is a quick and easy task that will save you time and energy. If you take the time to perform this, you can save expensive engine damage.

Air filters need to be changed out if they become too clogged with dust, oil, or physical damage.

Why is your Ferris lawn mower smoking because of a clogged air filter?

  • If your mower’s engine isn’t getting enough air, it will run rich and produce black smoke. What this implies is that there is a greater proportion of gasoline in the air mixture needed to power the engine.
  • If your air filter has become so clogged that it prevents any air from reaching the engine, you may be seeing smoke as a result. Any available source of air, including the crankcase, will be sucked into the engine. It is possible that the oil that is burned in the cylinder is sucked into the crankcase together with the air.
  • If the engine in your Ferris mower starts to smoke, the situation might be made much worse if the air filter became clogged up.

To maintain the optimal performance of your air filter, please follow these guidelines:

Refresh a filter element made of Ferris paper

  • Get rid of the air filter by taking it out of its housing.
  • Use a dry, clean cloth to remove any lingering grime from the housing. Do not let dust or other debris land on the air intake.
  • You may loosen the dirt in your filter and encourage it to fall out by tapping it against a hard surface.
  • Raise the filter to the light source. If you can still see light through the paper, your filter is good to go for another usage. If you can’t, then it’s time to go out and get a new filter.
  • You should put the air filter back in and secure the lid.

A Ferris mower will smoke if there isn’t enough oil in the engine

The engine manufacturer specifies how much oil the crankcase can store. You should only add oil up to the “full line” on the dipstick.

Damage to your mower’s engine, or even having to replace it, can be caused by using either too much or too little engine oil.

Your Ferris mower has low engine oil

The internal engine parts won’t have the lubrication they need to operate freely if the oil level is too low. Lack of oil leads to increased friction, which in turn increases engine temperature.

As the temperature rises, the oil can catch fire and the engine components might melt, releasing smoke. If you discover that your mower’s engine is smoking due to a lack of oil, you can try refueling and restarting it.

Low oil pressure might cause your mower to overheat and start smoking, which can lead to engine damage that can’t be simply fixed by topping up the oil. Take your mower to a professional small engine repair for an accurate diagnosis.

If you want to avoid the costly repairs that can result from operating with too low of an oil level, you should take a few minutes before each mow to inspect your mower, especially the oil level. Preventing further damage to your mower by not using it while this condition persists is a top priority.

Your Ferris mower has a sluggish engine due to excessive oil

While it’s common knowledge that an engine shouldn’t be started if it’s low on oil, less people are aware that too much oil in the crankcase may also be dangerous.

The crankcase pressure rises if there is an excess of oil. When this happens, oil can be forced into the cylinder and even the air intake by way of the valve train. Smoke will be produced as the oil in the cylinder is consumed by the flame.

See “This is What Happens with Too Much Oil in a Lawn Mower” for further information on the complications that might arise from using your Ferris when the oil level is too high.

Too much oil in the crankcase indicates that the engine oil level has to be adjusted downward. This can be accomplished by draining some oil from the engine or replacing the oil filter.

Oil evacuators and turkey basters can be used to siphon oil from the reservoir.

After draining some oil, verify the level using the dipstick. Keep adding or draining oil until you reach the “full” mark.

Make sure the air filter hasn’t been clogged up with oil or smoke and give it a quick inspection. Changing the air filter should be done if this is the case.

Bad Gasket Will Cause a Ferris Lawn Mower to Smoke

Smoke coming from your Ferris mower could be the result of a bad gasket on your mower causing engine oil to leak. When oil is leaked onto a hot surface, like your muffler, it will begin to burn off and smoke.

A damaged Ferris lawnmower’s internal engine will produce smoke

There might be an issue with the internal combustion engine of your Ferris mower if you notice smoke emanating from it. When you’re at the stage where you’re trying to find an excuse for smoking within yourself, quitting becomes a lot more challenging.

Tearing down the engine and checking for leaks and compression is necessary to pinpoint the origin of an internal engine problem.

But there is one easy test that will indicate an internal engine problem even if it doesn’t pinpoint the precise cause.

Spark plugs should be removed and inspected for oil buildup. If oil is found on the spark plug, it might mean there is a problem with the piston rings or the valve train.

A small engine technician will be needed to assess the problem and choose the best course of action. The results of this inspection won’t tell you exactly what the problem is, but they will let you know that you need to take your car in to the shop soon.

A technician that specializes in tiny engines will be able to inspect the motor and determine what caused the damage.

Ferris Mower Engine Has a Blocked Piston

To diagnose a defective piston ring, you will have to disassemble your engine. Your Ferris will start smoking if oil gets into the combustion chamber and burns off due to a damaged piston ring or scoring in the cylinder wall.

Ferris Mower Engine Valves Not Opening Correctly

A burned valve can occur in an overheated Ferris mower. In order to diagnose a burn valve issue, the cylinder head must be removed and a leak-down test must be conducted.

An expert in tiny engines should inspect and fix this. The technician needs to cut the seat and the valve precisely to finish the combustion chamber.

What Is the Difference Between Blue, White, and Black Smoke from Your Ferris Lawn Mower?

If your mower is emitting smoke, the measures outlined above are what you should take first. However, knowing what hue the smoke is might help you narrow down the possibilities for its origin.

If your Ferris mower is emitting blue or white smoke, it’s because it’s using too much oil. The piston rings, valve train, or an engine gasket may be leaking oil into the combustion chamber, causing this. If the air filter is blocked, oil might be forced into the cylinder.

Excessive gasoline burning is the likely cause of the black smoke coming from your Ferris mower. A clogged air filter causes a greater concentration of fuel in the mixture than is ideal.

Black smoke may be produced by the Ferris mower if it is being used in a rich condition. If your mower isn’t getting enough air, check the air filter first.

Are You Still Experiencing Issues with Your Ferris Mower?

Inevitably, you’ll have issues with your lawnmower, regardless of the brand.

In light of this, I have collected a list of typical issues with Ferris lawn mowers and how to fix them, so that you will know what to do the next time your mower won’t start, keeps dying, makes a poor cut, or overheats.

Read more: Common Ferris Zero Turn Mower Problems and Solutions.