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It’s essential to keep on top of all motorcycle maintenance and servicing to ensure the smooth running of your motorcycle. As part of this, it’s critical to regularly clean your carburetor to deliver optimum performance at all times.
Keeping your carburetor clean doesn’t have to mean time-consuming and expensive solutions. These days the best motorcycle carb cleaners can do the job quickly and efficiently.
We’ve compiled a shortlist of our 6 favorite carb cleaners that can help to save you time and money. So, let’s go through them…
- Top 6 Best Motorcycle Carb Cleaners You Should Buy 2021 Review
- 1 Chevron Techron Concentrate Plus Fuel System Cleaner – 20 oz. – Best Carb Cleaner for Old Motorcycles
- 2 STP Fuel System Cleaner and Stabilizer, Ultra 5-in-1, Advanced Synthetic Technology, 12 Fl Oz, Pack of 1, 18410B – Best Motorcycle Fuel System Deep Cleaner
- 3 Gunk M4814/6 Chlorinated Carburetor Parts Cleaner, One Each, 12.5 oz. – Best Spray Motorcycle Carb Cleaner
- 4 Genuine Ford Fluid PM-2 Carburetor Tune-Up Cleaner – 18 oz. Aerosol – Best Foam Motorcycle Carb Cleaner
- 5 Red Line (60103) Complete SI-1 Fuel System Cleaner – Gas and Injector Additive Treatment – 15 Oz Bottle – Best Motorcycle Carb Fuel Cleaner
- 6 Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner – 300 ml – Best Easy to Use Motorcycle Carb Cleaner
- Best Motorcycle Carb Cleaners Buying Guide
- Looking for more excellent products for your Motorcycle?
- So, what is the Best Motorcycle Carb Cleaner?
Top 6 Best Motorcycle Carb Cleaners You Should Buy 2021 Review
1 Chevron Techron Concentrate Plus Fuel System Cleaner – 20 oz. – Best Carb Cleaner for Old Motorcycles
Chevron Techron Concentrate Plus Fuel System Cleaner is a fuel additive that you add to your gas tank. It’s a well-known and well-trusted brand that also comes from a leading US petrochemical company.
So, when should you use it, and what will it do?
Techron can be used to clean out your motorcycle’s engine from the inside. If you feel your engine is sagging, you can use it to give it boost. It should help to increase your engine’s performance, increase its fuel efficiency, and also lower emissions.
Modern engines are increasingly designed to work within narrow tolerances. As a result, when temperatures rise, contaminants and particles can build up in the small gaps and quickly affect the engine performance.
The unwanted residue, as a result of poor-quality gasoline, can be removed by the introduction of Techron. It works on a molecule by molecule basis in the prevention of deposit formation, which means a cleaner, smoother, and more efficient engine.
What do we like best?
Techron can be used in new or old engines. It works quickly to strip deposits from your carburetor as well as from your fuel injectors, valves ports, and combustion chamber.
Use it every 3,000 miles and keep those pinging noises, poor starting, and poor running problems behind you. It’s like an affordable engine tune-up in a bottle.
- Easy to use.
- Can be used on old or new bikes.
- Hard to gauge the effectiveness.
2 STP Fuel System Cleaner and Stabilizer, Ultra 5-in-1, Advanced Synthetic Technology, 12 Fl Oz, Pack of 1, 18410B – Best Motorcycle Fuel System Deep Cleaner
STP has a long and impressive history. They have 60 years of experience in taking care of motorcycles on the inside and the outside. If you need a little extra protection on the inside of your engine, you can rely on these guys.
5 in 1…
STP Fuel System Cleaner and Stabilizer is a 5 in 1 cleaner. It comes in a 12 oz bottle and can be used in a tank with up to 33 gallons of gasoline inside. It’s recommended that it’s not used when the tank is anything less than half full. For motorcycle tanks, you’ll, therefore, need to adjust the quantity accordingly.
The cleaner and stabilizer can be used in most gas-powered engines. It can be used on 2 or 4 stroke engines and can even be used in lawnmower engines. Best of all, its use in no way affects the motorcycle’s warranty. Now that’s some good peace of mind.
Modern fuels have a high ethanol count. These increasingly higher levels of ethanol-blended fuel cause an increasing amount of damage to your ride. These fuels are great for the planet but, if you’re not careful, it can be a little heavy on your motorcycle and engine.
How does this product work?
STP cleaner and stabilizer works by inhibiting the deposits that can cause rust and corrosion in your engine. These deposits and corrosive elements are frequently the unwanted results of moisture, and this is where STP is your friend.
It also works to deep clean the entire fuel system. Plus, the friction modifiers within the cleaner help to lubricate the internal engine. These parts include the cylinder walls and piston rings, and it can remove as much as 61% of harmful deposits. What’s more, it can restore your original injector performance by up to 95%.
Expect to improve the fuel economy and improve the overall engine performance of your motorcycle.
Not bad for such an affordable and easy to use the product.
- Prevents poor idling.
- Improves fuel economy.
- Removes 61% of harmful deposits.
- Reduces corrosion.
- The bottle easily leaks.
3 Gunk M4814/6 Chlorinated Carburetor Parts Cleaner, One Each, 12.5 oz. – Best Spray Motorcycle Carb Cleaner
This is another long-established product made by a long-standing company based in the US.
Gunk M4814/6 Chlorinated Carburetor Parts Cleaner is a fast-acting formula that dissolves all unwanted gunk. It comes in spray form and can also be used as a degreaser. You can use it to remove dirt, varnish, carbon deposits, as well as gum and sludge in your carburetor.
High capacity nozzle…
This is the ideal motorcycle carb cleaner for difficult to reach places that might otherwise go untouched and remain dirty. It has a high capacity nozzle that can produce high pressure and an effective blast that will reach pretty much everywhere on your motorcycle.
If you still have problems in hard to access places, don’t worry. Happily, it comes with an extension hose that you can attach to the nozzle, which gives you even more flexibility.
The various parts of your motorcycle, and otherwise difficult to reach places, can be cleaned with ease. You’ll be able to clean manifolds, choke linkages, heat controls, and of course, carburetors. What’s more, due to the high-pressure nozzle, it can do all of this much quicker than most competitor products.
But best of all…
One last advantage is that this excellent Carburetor Parts Cleaner is available as either the Chlorinated version we’ve reviewed or as a chlorine-free version (M4815NC). This means you don’t need to worry if it comes into contact with non-metallic parts. Plastics and rubber can become degraded when exposed to chlorine and result in a series of faults under your seat.
And who wants that?
- Powerful formula.
- High-pressure nozzle.
- Nozzle extension.
- Chlorine-free version available.
- Pressure in the can may fail with fluid remaining.
4 Genuine Ford Fluid PM-2 Carburetor Tune-Up Cleaner – 18 oz. Aerosol – Best Foam Motorcycle Carb Cleaner
This is a genuine Ford product from the Ford Motor Company. You’re therefore guaranteed a quality product from one of the largest manufactures in the world.
This is a foam option…
It comes in an 18oz spray can, and the can is sufficient for one application. The spray comes out in foam, which unfortunately can make it hard to see where you’re spraying at times.
Happily, the gas inside is sufficient to empty all the contents. This was a moan for us with the cleaner from Gunk. There’s no such problem with Ford’s product. All as it should be here.
Great for hard to reach places…
The Ford Fluid PM-2 Carburetor Tune-Up Cleaner comes out under high-pressure, which makes it easy to reach what would otherwise be difficult to reach places. Unlike the Gunk cleaner, it doesn’t have a hose adaptor to help with highly inaccessible areas, though we didn’t find this to be a problem.
It can be used on all engines that run on gasoline but should never be used on diesel engines, something to be aware of should you choose to use it on your car’s engine rather than your motorcycle’s.
Take note of the instructions…
You can spray it directly into the carburetor and throttle body. It can be sprayed onto the throttle body plate and shaft, the covering choke plate and shaft but it should be sprayed when the engine is running and has reached normal operating temperature.
Once the entire can has been sprayed into the carburetor, the engine needs to be turned off. Then the engine needs to stand for a couple of minutes before turning it back on again. Rev the engine a few times and let the engine idle for a couple of minutes whilst the Tune-Up Cleaner works its magic.
Which is what, you ask?
The cleaner will remove and dissolve sludge and harmful deposits that have built-up over time in your carburetor. This will do the job that normally involves hand cleaning with the parts on the bench.
The Ford Fluid PM-2 Carburetor Tune-Up Cleaner will also unclog your carburetor and assure a smooth airflow. In turn, it will help to maintain better tuning, and therefore improve the performance and efficiency of your motorcycle and engine.
- Easy to use spray formula.
- Powerful spray.
- Quickly dissolves and removes deposits.
- Sufficient gas for can contents.
- Foam can make it difficult to see where you’re spraying.
5 Red Line (60103) Complete SI-1 Fuel System Cleaner – Gas and Injector Additive Treatment – 15 Oz Bottle – Best Motorcycle Carb Fuel Cleaner
Red Line comes in a 15oz bottle, and it’s a fuel additive that should be added directly into your gas tank. It’s recommended that the entire bottle’s contents should be added to a full tank in a car. In your motorcycle, you’ll need to add considerably less. So, you’ll need to do a few simple calculations to come up with a reasonable mix.
It’s recommended for use every 3,000 miles and is like a mini clean and tune-up for your engine. It can be used in any vehicle running on gasoline. It can also be used in combination with any type of gasoline fuel, including fuels with high ethanol content.
Once in the fuel tank…
Red Line (60103) Complete SI-1 Fuel System Cleaner will go to work and clean close to 100% of all those nasty carbons and particles lurking in your system. It will clean your carburetor, injectors, combustion chamber, and valves. It will also clean your pollution control valves.
As if that’s not enough, it also cleans out gum and reduces varnish formation in your fuel system. This leads to better fuel stability. Think of using Red Line cleaner as a bit like de-scaling your kettle.
Better in every way…
When you’ve added Red Line (60103) Complete SI-1 Fuel System Cleaner to your tank, you can expect to enjoy more efficient fuel burning and performance, smoother running, and improved protection for your engine.
- Fast working formula.
- Easy to use.
- Improves fuel economy.
- Increases performance.
- The bottle may leak.
6 Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner – 300 ml – Best Easy to Use Motorcycle Carb Cleaner
Cleaning out a carburetor can be a time consuming and difficult process. Having a spray formula to do all the hard work for you, we’re sure you’ll agree, is never a bad thing. Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner is a great option to have.
Using it couldn’t be easier…
It can be sprayed directly into the carburetor and associated parts without the need for any scrubbing or cleaning. Spray it into the carburetor when the engine is running. Turn the engine back on again, rev a few times, idle for a few minutes, turn off the engine, and you’re done.
It couldn’t be easier. When you’re finished, don’t forget to hide away with a couple of beers for a few hours. You can then regale your significant other about all the hard work you’ve been doing in the garage.
The primary purpose here…
Jectron cleaner is made for cleaning fuel-injected systems. It cleans all those nasty deposits that cling on to the valves and combustion chamber in your carburetor. It will also benefit your engine by cleaning the intake and injection system. However, the primary purpose is to clean the valves and chamber.
The benefits you can expect to enjoy include improving fuel economy and performance as well as overall smoother running. Added to a well-maintained bike, it should help to return it to something like its original performance.
- Easy to use.
- Strong spray.
- Works quickly to dissolve deposits.
- Trusted and long-established brand.
- Hard to gauge improvements.
Best Motorcycle Carb Cleaners Buying Guide
How to Use
The simplest method to clean out your carburetor involves using a spray or cleaner that’s added directly to the fuel. This allows you to clean out the carburetor without removing it from your vehicle and with the minimum of fuss. For this reason, we’ve stuck to using these types of cleaners.
You can use cleaners that involve immersing the separate parts of the carburetor into a cleaner. However, this involves stripping it down to its parts, and these are jobs best left to the professionals and competent amateurs.
Thankfully, we’ve kept things nice and simple.
Firstly, you simply screw off the air filter. Secondly, you blow out all the loose debris. You can use something like a vacuum for this, but you need to be careful during this process not to blow any dirt into the engine.
When you’ve done all of this, you’re then ready to start cleaning. Introduce the spray cleaner to the carburetor whilst the engine is still running, and, at this point, the engine should be running at a normal temperature.
The final step involves turning off your engine and waiting for a few minutes to allow the cleaner to work. Then restart your engine, rev it a couple of times and leave to run for a further couple of minutes.
And that’s it.
Our pick of the best spray cleaner goes to the Gunk M4814/6 Chlorinated Carburetor Parts Cleaner.
Fuel cleaners are even easier to use.
These are added directly to the gas tank. They should be added to at least a half tank, preferably to a full tank of fuel, and these should be used as part of your routine maintenance. The great thing about these cleaners is that once you’ve put them into the gas tank, it’s job done.
This is even easier than using a spray.
Our top pick for carburetor fuel cleaner is the Red Line (60103) Complete SI-1 Fuel System Cleaner.
How Often to Use
This will depend on the age and the condition of your ride. However, regardless of these things, you shouldn’t need to add either fuel additives or use a carburetor spray too often.
A fuel additive cleaner should typically be added every 3,000 or 4,000 miles, and that should be more than sufficient. A modern motorcycle won’t require anything more than this.
If you’re using a carburetor spray, you could think about using it at the same kinds of intervals.
Chlorinated or Non-Chlorinated?
If you’re cleaning smaller areas and any parts where the cleaner may come into contact with plastic, rubber, or softer materials, non-chlorinated cleaners are the way to go. They are safe to use everywhere, which means you can be much more liberal about how the product is applied.
The non-chlorinated version of Gunk M4814/6 Chlorinated Carburetor Parts Cleaner, Gunk M4815NC Carburetor Parts Cleaner Non-Chlorinated is a great product to use in these circumstances.
Chlorinated cleaners can cause damage to plastics and rubber, so much more care must be taken when they’re being used. However, in their favor, they’re more powerful than their non-chlorinated counterparts.
When more thorough cleaning is required, we’d go for a chlorinated product. When routine cleaning is the order of the day, we’d most likely go for something non-chlorinated.
Do these products really work?
The bottom line is that they are effective in maintaining the smooth running of your carburetor and engine. The level of increase in performance and fuel economy can be hard to measure. Never the less, it’s still there.
Cleaning the carburetor should be a part of a normal maintenance schedule. Just as you should always clean out the dirt and gunk from your washing machine, your carburetor also deserves a bit of love.
One last word of caution is that without other routine maintenance going on in the background using a carburetor cleaner will count for nothing. You need to keep on top of all servicing to keep your motorcycle running efficiently and smoothly.
Looking for more excellent products for your Motorcycle?
For in-depth articles on other essential routine motorbike maintenance products, take a look at our reviews of the Best Motorcycle Chains, the Best Motorcycle Shocks, the Best Motorcycle Tank Sealers, the Best Tire Spoons for Motorcycles, and the Best Motorcycle Exhausts.
So, what is the Best Motorcycle Carb Cleaner?
So, there you have it – a quality range of carburetor sprays and fuel additive cleaners.
The choices we’ve selected all make cleaning your carburetor a quick and easy process. Whether you want to spray the cleaner directly into your carburetor or add the cleaner into your fuel, they’re all great options.
Out of the 6 motorcycle carb cleaners on our list, our top pick is the…
We like it because even though it is chlorinated, there is also a non-chlorinated version available that reduces the chances of damage in the event it’s inadvertently sprayed onto non-metallic parts. We also like the fact that it has a high-pressure spray, and it can double up for use as a degreaser.
Happy Carb Cleaning.