Honda GCV160 Spark Plug Gap and Socket Size: Detailed Guide

Are you having trouble figuring out the spark plug gap and socket size for your Honda GCV160 engine? Don’t worry; we’ve got you covered!

In this article, we’ll provide a comprehensive guide to for you understand the Honda GCV160 spark plug gap and socket size.

We’ll also provide some helpful tips on how to replace the spark plug. So keep reading to learn more about your Honda GCV160 engine.

What is the Recommended Spark Plug Gap for a Honda GCV160 Engine?

Honda GCV160 Spark Plug Gap and Socket Size

The recommended spark plug gap for a Honda GCV160 engine is 0.028″ 0.030″. The socket size is 13/16″ (21mm). Data for this page is based on official manuals from Honda. It is important to use the correct spark plug and gap size to ensure optimal performance of the engine.

How to Measure the Correct Spark Plug Gap for a Honda GCV160 Engine

If you own a Honda GCV160 engine, it is important to measure the correct spark plug gap in order to ensure that your engine runs optimally. The gap should be between 0.028” and 0.030”, and the socket size should be 13/16” (21mm).

Honda GCV160 Spark Plug Gap and Socket Size

To measure the spark plug gap correctly, you will need a suitable gauge. Begin by removing the spark plug from the engine using a 5/8 socket if necessary. Then, use the gauge to measure the electrode gap of the spark plug. If it is not within the specified range, adjust it accordingly until it is correct.

It is also important to use an NGK BPR6ES spark plug for your Honda GCV160 engine. This type of spark plug has been specifically designed for this model of engine and will provide optimal performance when used correctly.

Selecting the Right Spark Plug for Honda GCV160 Engine

Honda GCV160 Spark Plug Gap and Socket Size

Here are some tips on how to choose the best spark plug for your Honda GCV160 engine

  1. Check the Owner’s Manual: The owner’s manual will provide you with the recommended spark plug type for your specific engine. For Honda GCV160 engines, mostly recommended type of spark plug is BPR6ES (NGK) or equivalent (for pressure washer applications) or BPR5ES (NGK).
  2. Consider Quality: When selecting a spark plug, it is important to consider quality and price. Premium quality spark plugs are designed to last longer and perform better than lower-priced alternatives.
  3. Check Compatibility: Before purchasing a spark plug, ensure it is compatible with your Honda GCV160 engine. You can check compatibility by looking at the product description or by contacting the manufacturer directly.

Tips on Ensuring Proper Installation of the New Spark Plugs in a Honda GCV160 Engine

Here are some tips on ensuring proper installation of the new spark plugs in a Honda GCV160 engine

  1. Make sure you have the right size socket for removing and installing the spark plug. The old spark plug requires a 5/8 socket, while the new one requires a 13/16 socket.
  2. Before installing the new spark plug, make sure it is clean and free from any debris or dirt that may be stuck on it.
  3. Use anti-seize lubricant on the threads of the new spark plug before inserting it into the cylinder head to ensure a secure fit and prevent corrosion over time.
  4. Tighten the spark plug securely but not too tightly, as this could cause damage to both the threads and the cylinder head itself.
  5. After installation, use a gap gauge to check for an adequate gap between the electrodes of each spark plug so that they can fire properly when needed.
  6. Finally, reconnect all wires and cables back to their original positions before starting up your engine again to ensure everything is working correctly.

By following these steps, you can ensure the proper installation of your new spark plugs in a Honda GCV160 engine and keep it running smoothly for years to come.

Common Issues with Incorrectly Gapped and Sized Sparks Plugs in a Honda GCV160 Engine

One of the most common issues with incorrectly gapped or sized spark plugs in a Honda GCV160 engine is decreased fuel economy.

When the gap between the electrodes is too wide or too narrow, it can cause misfires which decrease fuel efficiency.

Finally, an incorrect spark plug gap or size can increase emissions from your Honda GCV160 engine. When the gap between the electrodes is too wide or too narrow, it can cause misfires, leading to incomplete combustion and increased emissions of unburned hydrocarbons and carbon monoxide.

Benefits of Regularly Replacing Your Spark Plugs on your Honda GCV160 Engine

Regularly replacing your spark plugs can help keep your engine running smoothly and efficiently while also helping to extend its life. Here are some of the benefits of regularly replacing your spark plugs

  1. Improved Performance: Spark plugs that are in good condition will provide a better spark, which helps to improve the performance of your engine. This means that you’ll get more power and better fuel economy from your engine.
  2. Reduced Emissions: Old or worn-out spark plugs can cause increased emissions from your engine, which can harm the environment. By regularly replacing them, you can help reduce emissions and do your part for the environment.
  3. Longer Engine Life: Spark plugs that are in good condition will help ensure that all the components of your engine are working together properly, which will help extend its life and keep it running smoothly for longer periods.

When to Replace Your Old Sparks Plugs with new ones

  1. If you notice that the engine needs repeated attempts to start properly, it may be time to replace the spark plugs.
  2. If the engine misfires or fuel consumption is noticeably higher than usual, this could be a sign that the spark plugs need replacing.
  3. Spark plugs should be replaced every two years or after every 100 hours of operation, whichever comes first.
  4. To ensure optimal performance from your Honda GCV 160 engine, use only genuine Honda parts and follow the manufacturer’s instructions when replacing spark plugs.
  5. Before replacing the spark plugs, make sure to check the gap between them and adjust as necessary using a feeler gauge.
  6. Once you have installed the new spark plugs, make sure to tighten them securely but not too tightly, as this can cause damage to the threads in the cylinder head and lead to poor performance from your engine over time.
  7. Finally, check and adjust valve clearance according to the manufacturer’s specifications before starting up your Honda GCV 160 engine with new spark plugs for optimal performance and longevity of your engine components over time.


Providing your Honda GCV160 lawnmower with high-quality components like correctly gapped and sized spark plugs will help maintain its performance while reducing emissions over time.

Knowing what kind of socket size and gap value you need ahead of time will save you time when shopping around for replacement parts, as well as help ensure that your new parts fit properly once installed into place!

With this guide as reference material, you’ll have all the information needed to keep your Honda running strong.

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