The 27 hp Briggs and Stratton engine is a popular choice for many lawn tractors and mowers due to its power and reliability. However, like any other engine, it is not immune to problems.
In this article, we will discuss the common problems associated with the 27 hp Briggs and Stratton engine and provide solutions to resolve them.
Whether you are a lawn care professional or a homeowner, this article will help you understand and troubleshoot issues with your engine, ensuring that your lawn tractor or mower is running smoothly and efficiently.
Common Problems with 27 HP Briggs and Stratton Engine
The 27 hp Briggs and Stratton engine is a powerful workhorse that is commonly used in lawn tractors and mowers. While this engine is known for its reliability, it can experience issues from time to time.
In this section, we will discuss the most common problems that are associated with the 27 hp Briggs and Stratton engine and how to address them.
Backfiring Under Load
Backfiring when under load is one of the most common problems associated with the 27 hp Briggs and Stratton engine.
This issue can be caused by a variety of factors, including
- a dirty air filter
- bad spark plug
- or a malfunctioning carburetor.
A dirty air filter can restrict airflow to the engine, which can lead to backfiring.
Similarly, a bad spark plug can cause the engine to misfire, which can also lead to backfiring.
Finally, a malfunctioning carburetor can cause the engine to run rich, which can result in backfiring as well.
Sunburn Gasoline Smell
The smell of sunburned gasoline when under load is another common issue that can occur with the 27 hp Briggs and Stratton engine.
This problem is usually indicative of a fuel systems issue, such as a clogged fuel filter or carburetor.
When the engine is under load, it requires more fuel to operate, and if the fuel system is not functioning properly, it can result in a smell of sunburned gasoline.
Other potential causes of this issue include a damaged or worn fuel line or a faulty fuel pump.
RPM Drop When Engaging the Mower Deck
Dropping RPM when engaging the mower deck is another common issue that can occur with the 27 hp Briggs and Stratton engine. This problem is usually caused by a governor issue.
The governor is responsible for maintaining the engine’s speed, and if it is not working correctly, the engine’s RPM can drop when the mower deck is engaged. This can lead to a loss of power and performance, which can be frustrating for the operator.
Issues with Spark Plug
Spark plug issues are also a common problem that can occur with the 27 hp Briggs and Stratton engine.
A bad spark plug can cause the engine to misfire, which can lead to a loss of power and performance.
Over time, the spark plug can become fouled with carbon deposits or wear out, which can cause it to fail altogether.
If the spark plug is not functioning correctly, it should be replaced with a new one.
Governor problems are another issue that can occur with the 27 hp Briggs and Stratton engine.
The governor is responsible for regulating the engine’s speed, and if it is not working correctly, it can lead to a loss of power and performance.
A malfunctioning governor can cause the engine to run at the wrong speed, which can lead to decreased power and performance. This issue can usually be resolved by adjusting the governor or replacing it if necessary.
Issues with Valves
Finally, valve issues can cause the engine to run poorly or fail to start altogether. To inspect the valves, remove the valve covers and slowly rotate the engine.
Make sure that all of the valves open at the same distance and that the gap setting is correct. If the valves are not opening or closing properly, or if the gap setting is incorrect, the valves may need to be adjusted or replaced.
Ignition system problems
Your spark plugs look good, but you still don’t get a spark, there may be a problem with your ignition system. This can include a faulty spark plug lead, a shorted kill switch, or a damaged flywheel key.
To test and fix these issues, you can check out this guide on small engine ignition systems from Briggs and Stratton, or contact an authorized dealer for advanced repair help.
Valve and compression system problems
The valve and compression system controls how air and fuel vapors move through the engine. It consists of valves, pistons, cylinders, and rings that work together to create compression and power.
If any of these components are worn out, broken, or misaligned, they can cause starting or performance problems.
You should check the valves for proper clearance and movement, and perform a compression test to measure the pressure in the cylinders.
Smoke Emits While Running
Another common problem with this engine is that it emits smoke while running. This can indicate different issues, depending on the color of the smoke:
- White or blue smoke: This means that oil is burning in the combustion chamber. This can be caused by overfilling the oil, using the wrong type of oil, having a leaky head gasket, or having worn piston rings or valve seals.
You should check your oil level and drain any excess oil, use the recommended type of oil for your engine model, replace any damaged gaskets or seals, and perform an oil change if needed.
- Black smoke: This means that there is too much fuel in the combustion chamber. This can be caused by a dirty air filter, bad fuel, an overfilled carburetor, or a stuck choke.
You should check your air filter and clean or replace it if necessary, use fresh and clean fuel, adjust your carburetor settings according to your manual, and make sure your choke is working properly.
These are some of the most common problems with 27 hp Briggs and Stratton engines, but they are not exhaustive. If you encounter any other issues with your engine, you should consult your owner’s manual for more troubleshooting tips, or contact an authorized dealer for professional assistance.
Troubleshooting the 27 hp Briggs and Stratton Engine
If you are experiencing issues with your 27 hp Briggs and Stratton engine, the following troubleshooting tips can help you diagnose and resolve the problem.
Spark Plug Testing
One of the first things to check when experiencing issues with your engine is the spark plug. A bad spark plug can cause the engine to run poorly, misfire, or fail to start altogether.
To test the spark plug, remove it from the engine and inspect it for any signs of damage, such as cracks or deposits. If the spark plug looks damaged, it should be replaced with a new one.
- Reconnect it to the ignition wire and ground the body of the plug against the engine block.
- Pull the starter cord or engage the starter motor and observe the spark plug.
A healthy spark plug will produce a bright blue spark, while a faulty one will produce a weak or non-existent spark. If the spark is weak or non-existent, the spark plug should be replaced.
Valve issues can cause the engine to run poorly or fail to start. To inspect the valves, remove the valve covers and slowly rotate the engine. Make sure that all of the valves open at the same distance and that the gap setting is correct.
If the valves are not opening or closing properly, or if the gap setting is incorrect, the valves may need to be adjusted or replaced.
If the engine is dropping RPM when engaging the mower deck, it could be a sign of a governor issue. To inspect the governor, start the engine and engage the blades.
Then, manually work the governor’s arm and observe the engine speed. If the engine runs smoothly and happily up to 3600 RPM, the governor may need to be adjusted. If adjusting the governor does not resolve the issue, it may need to be replaced.
Fuel System Inspection
Issues with the fuel system can cause a variety of problems, including backfiring and the smell of unburned gasoline. To inspect the fuel system, start by checking the fuel filter.
A clogged fuel filter can restrict fuel flow and cause issues with the engine. If the fuel filter is clogged, it should be replaced.
Next, inspect the carburetor for any signs of damage or wear. A malfunctioning carburetor can cause issues with the engine’s fuel mixture, which can result in poor performance, backfiring, or a smell of sunburned gasoline. If the carburetor is damaged or worn, it should be replaced.
Other potential fuel system issues include a dirty air filter, a clogged fuel line, or a malfunctioning fuel pump. Inspect these components and replace them if necessary.
Electrical System Inspection
Issues with the electrical system can cause problems with the engine’s spark and ignition. Start by checking the battery and charging system. A weak battery or faulty charging system can cause issues with the engine’s ignition, leading to poor performance or failure to start.
Next, inspect the ignition coil and spark plug wires. These components can become worn or damaged over time, leading to issues with the engine’s spark. If the ignition coil or spark plug wires are damaged, they should be replaced.
Q: What is the best Briggs and Stratton engine?
A: The best Briggs and Stratton engine will depend on your specific needs and applications. Briggs and Stratton’s engines are known for their reliability, durability, and high-performance capabilities, making them a popular choice for a variety of industries, including lawn care, construction, and power generation.
Q: Why did Briggs and Stratton fail?
A: In 2020, Briggs and Stratton filed for Chapter 11 bankruptcy due to a variety of factors, including declining sales, high debt levels, and increased competition. The company had been struggling financially for several years, and the COVID-19 pandemic further impacted its operations and sales.
Q: Are Briggs and Stratton a good brand?
A: Yes, Briggs and Stratton is a well-known and respected brand in the small engine industry. The company has been in business for over 100 years and is known for producing reliable and high-performance engines for a variety of applications.
Q: What country is Briggs and Stratton engine from?
A: Briggs and Stratton is an American company that was founded in Milwaukee, Wisconsin in 1908. The company is headquartered in Wauwatosa, Wisconsin, and has manufacturing facilities in several locations throughout the United States.
Q: Are Briggs engines made in China?
A: Briggs and Stratton’s engines are primarily manufactured in the United States, although the company does have some operations and facilities in other countries, including China. However, the majority of Briggs and Stratton’s engines sold in the United States are made in the United States.
Q: How fast is a Briggs & Stratton?
A: The speed of a Briggs and Stratton engine will depend on a variety of factors, including the size and type of the engine, the load it is under, and any modifications or customizations that have been made. However, Briggs and Stratton engines are known for their high-performance capabilities and can often reach speeds of up to 3600 RPM or more.
Q: What brands use Briggs and Stratton engines?
A: Briggs and Stratton’s engines are used by a variety of well-known brands and manufacturers, including Toro, Craftsman, John Deere, Husqvarna, Snapper, and Simplicity, among others. These brands rely on Briggs and Stratton engines for their power and performance capabilities.
In conclusion, the 27 hp Briggs and Stratton engine is a reliable workhorse that can experience issues from time to time.
By understanding the common problems associated with this engine and how to address them, operators can ensure that their equipment is running smoothly and efficiently.
Regular maintenance and inspections can help prevent issues from arising in the first place, and always consult a professional if you are unsure about any aspect of engine repair or maintenance.