When you fire up your trusty lawn mower to undertake the overgrown sess in your yard , the last matter you want to see is smoke billowing out from the locomotive . It can be a lawsuit for concern , but fear not , as there are several common reasons why your lawn mower may be emitting smoke .

Excess Oil

One of the chief causes of your lawn lawn mower smoking could be due to spare oil in the engine . If you unexpectedly overfill the crankcase with crude , it can direct to the oil burning off and producing smoke as a result . It ’s essential to ensure you are using the right amount of oil specified in the manufacturer ’s manual to prevent this issue .

Blown Head Gasket

Another perpetrator behind your smoking lawn mower could be a blown header gasket . A blown head gasket can lead to rock oil leaking into the burning chamber , causing it to burn and create smoke . If you suspect a bluster head gasket , it ’s best to confab a professional for fixture .

Insufficient Air in the Gas Tank

If your lawn lawn mower ’s gas cooler does n’t have enough air travel , it can result in a deep fuel admixture that does n’t glow efficiently . This can cause the locomotive to fume as unburned fuel exits the fumes . verify to check the gas chapiter to see it ’s not clog and is allowing proper ventilation system .

Dirty Air Filter

A dirty or choked air filter can cut back flow of air to the engine , extend to a rich air travel - fuel mixture and subsequent smoking . Regularly inspect and clean or replace the air filter according to the manufacturer ’s recommendations to prevent this issue .

Improper Storage

If you have n’t in good order winterize your lawn lawn mower before hive away it for an extended time period , it can lead to issues such as moth-eaten fuel or moisture buildup in the engine , resulting in smoking when you start it up again . by rights train your lawn mower for warehousing can help oneself prevent smoking issues .

Worn Piston Rings

Worn Walter Piston rings can allow crude to seep into the combustion chamber , where it burns and produce smoke . If you distrust worn piston rings are the cause of the smoking , it ’s safe to have them inspected and supplant by a professional mechanic .

Overheating

Operating your lawn mower in overly high temperatures or under heavy encumbrance for extended stop can cause it to overheat , lead to fume from the railway locomotive . To prevent overheat , ensure your mower is adequately cool down and head off pushing it beyond its limit .

Incorrect Fuel Mixture

Using the wrong fuel mixture in your lawn mower , such as mix unconstipated gasoline with two - stroke petroleum in a four - stroke engine , can result in smoke . Always use the appropriate fuel and rock oil mixture advocate by the producer to prevent this issue .

Excessive Engine Wear

Over prison term , the internal part of your lawn mower ’s railway locomotive can hold out out , leading to increase crude oil ingestion and sens production . Regular criminal maintenance and timely replacing of worn parts can help prevent excessive engine article of clothing and smoke issues .

Water in the Fuel

If water contaminates the fuel in your lawn mower , it can disrupt the combustion process and cause smoke to give forth from the locomotive . To prevent piss contamination , ensure you store fuel in a clean , wry environment and utilise a fuel stabilizer to wield fuel quality .

Unexpected Mechanical Issues

In some cases , unexpected mechanical matter such as a damaged carburetor , malfunctioning seal , or a broken fuel bank line can lead to smoking in your lawn lawn mower . If you ’ve ruled out the common lawsuit and the smoking persists , it ’s advisable to have a professional diagnose and remediate any underlie mechanical issues .

Regular Maintenance is Key

By understanding the potential reason why your lawn mower is smoking and taking proactive measures to come up to them , you’re able to keep your mower running swimmingly and smoke - liberal . unconstipated sustenance , proper storage , and timely repairs are substantive to ensuring your lawn lawn mower stays in optimal condition for age to come .

Caroline Bates

Why Is Lawn Mower Smoking?