Garden

Experienced gardeners share their insights in answering this question :
Was it a backfire pop? If so, you may want to check the flywheel key.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

Hearing a lawn mower engine popping sound can be startling. That noise indicates that your lawn mower is backfiring, just as similar popping sounds can signal that a car engine is backfiring. When you hear that sound, it`s important to get to the root of the problem immediately to keep your machine in working order.
This could`ve occurred when it was tipped over, or you may have overfilled it when you added oil. First be sure the mower is not overfilled with oil. If it is, turn the mower up on the oil fill tube side, with a pan in place to catch the oil, remove the oil fill cap & allow the oil to drain out into the pan.
Backfires and afterfires are worth paying attention to since they can cause engine damage, power loss, and decreased fuel efficiency.
at backfires is irritating, but thankfully backfiring is not a danger to your engine and lawn mower. While it`s not dangerous, it can be a symptom of other problems, and should be addressed.
A spark plug that is damaged, worn, or has an improperly set gap between its electrodes creates a weak spark. As a result, the fuel may not ignite in the cylinder, but it might ignite when it reaches the hot exhaust muffler. The result is a loud backfire. Poor spark also results in a mower that runs unreliably.
Causes of Car Popping Sounds

Spark plugs that are worn or corroded. Defective spark plug wires. Clogged fuel filter. Internal ignition wiring or related ignition issue.

If the oil levels are too low, the lawn mower will not start and may need to be serviced or replaced. When the lawnmower`s oil level is low, it can cause damage to the engine. If your lawn mower does not have any oil in it, you should check it for leaks.
Overfilling a lawn mower oil tank will negatively affect engine performance and possibly prevent the mower from starting. Too much oil in a lawn mower can easily clog the air filter, foul spark plugs, and potentially cause a hydro-lock, which could bend the connection rods in a multi-cylinder mower.
Loud popping, knocking, and stuttering noises from the hood of your vehicle are cause for concern, and could be a sign of major engine damage.
If too much fuel is added to the engine, it may not all burn up before the exhaust valves open — letting unburned gasoline into the red-hot exhaust headers, where it can combust and lead to a backfire. Too much fuel could be getting into your engine due to damaged and leaking fuel injectors or bad engine sensors.
If your engine is getting more fuel than it needs, a rich fuel to air ratio is the result. When your car has leftover fuel in the exhaust and the cylinders, that fuel explosively burns and creates a loud popping sound.
Pop and bang tuning has certainly gained a poor reputation. But social acceptance aside, is it true pops and bangs tuning can damage your engine? The short answer is yes! The excess fuel added to cause the anti-lag and pops is not at all good for the longevity of an engine.
The short answer is yes, but it is not recommended. Ignoring a blown head gasket will likely lead to more damage to your engine as well as your wallet. Gaskets are some of the most important and necessary parts of any engine which function to seal off compartments.
This can be caused by a faulty mass airflow sensor or a clogged engine air filter “choking” the engine and not allowing enough oxygen to flow into it. Or, it could be caused by leaking fuel injectors forcing too much fuel into the engine.
Another possible cause of your backfire is a spark plug refusing to “spark” when the exhaust valve opens. If the air/fuel mixture has become too rich, unburned fuel is left in the exhaust system. The misfired spark plug ignites the rich air/fuel mixture, causing a loud “bang” in the tail pipe.
Water in the engine is a killer.” Smart move: At the end of the season, take 10 minutes to drain the tank or run the engine dry. Never change or add oil. Moving metal parts need oil, and an engine that`s denied clean oil, and enough of it, will overheat for sure.
Water in the engine is a killer.” Smart move: At the end of the season, take 10 minutes to drain the tank or run the engine dry. Never change or add oil. Moving metal parts need oil, and an engine that`s denied clean oil, and enough of it, will overheat for sure.
Clogged or Dirty Air Filters

Dirty air filters are one of the most common reasons lawn mowers sputter. Dirt can be present in the apertures that lead from the carburetor and the fuel filter and interrupt the flow of fuel supply to the combustion chamber. You want to be sure to clean or replace dirty air filters.

Clogged or Dirty Air Filters

Dirty air filters are one of the most common reasons lawn mowers sputter. Dirt can be present in the apertures that lead from the carburetor and the fuel filter and interrupt the flow of fuel supply to the combustion chamber. You want to be sure to clean or replace dirty air filters.

Clogged or Dirty Air Filters

Dirty air filters are one of the most common reasons lawn mowers sputter. Dirt can be present in the apertures that lead from the carburetor and the fuel filter and interrupt the flow of fuel supply to the combustion chamber. You want to be sure to clean or replace dirty air filters.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

I have trouble starting a toro walk behind mower
ANSWER : All, I thought my carb was shot, so I replaced it. Still, start but no run (and had to use starting fluid). THEN!!! I noticed the spring to the “rev limiter” (just below and towards rear of carb) was not “tight”. The stupid bracket that holds the end of that spring had been bent down ~1/16″ and that caused all this heartache. CHECK YOUR REV LIMITER!!!

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How do i add transmission oil – Ariens Lawn Tractor 46"" Riding Lawn Mower 936053"
ANSWER : Should a plug or cap on top of transaxle.

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<!– from fixya rte –>Rj19lm plug gap for a 195cc 4cyl lawnboy – Lawn-Boy lawnboy" Mower Blade 21"
ANSWER : As a starting point in my shop i always use 0.30 in. For all my mowers

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Why wont my mower start and gas comes out of muffler
ANSWER : Carb is flooding out ether bad plug or your carberator needs rebuilt

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Wont start no ignition put new plug in and fuel filter
ANSWER : Flush gas tank, fill with fresh gas and Stabil. Replace air filter. Remove bowl from carb clean bowl and holes in bowl screw.

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Lawn mower cranck but wont start…
ANSWER : Since you already checked for spark and air I would drain all the fuel out of it and check that fuel for water. Over time some lawn mowers end up with contaminated fuel. You can see the water sitting on the bottom of the fuel if you let it stand for a bit in a small plastic bowl.

Be sure to empty and dry out you fuel can as well. Especially if the mower stopped running right after a refuel. Which is a good sign your gas can is contaminated too.

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What type of oil for 17.5 42 500 cc – Craftsman 17.5 hp 42 in. Deck Lawn Tractor – CA Model
ANSWER : I use straight 30wt.

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Starts then dies – Troy Bilt 5.5hp Self Propelled Mower
ANSWER : Check oil level. all mowers have oil level cutoff. 30w oil. Remove air cleaner, try to start. Replace filter if dirty.

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