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Top 7 Best Motorcycle Carb Cleaners on the Market in 2021 Review

All riders know the importance of motorcycle maintenance. There are so many little jobs to take care of. Let’s face it, even the smallest of issues can develop into something serious if it’s not dealt with right away.

And a huge part of that is cleaning. Sure, it makes the bike look good, but it’s also important to keep that engine free from grime, dirt, or carbon deposits.

This is particularly true when it comes to classic or older motorcycles with carburetors. That’s why this review has searched for the best motorcycle carb cleaners around. So, let’s go through them to find the perfect product for your hog…

Top 7 Best Motorcycle Carb Cleaners to Purchase in 2021 Reviews

  1. WD-40 – 300134 Specialist Carb/Throttle Body & Parts Cleaner – Best Aerosol Motorcycle Carb Cleaner
  2. Red Line (60103) Complete SI-1 Fuel System Cleaner – Best Motorcycle Fuel System and Carb Cleaner
  3. LUCAS LUC10013 10013 Fuel Treatment – Best Concentrated Motorcycle Carb Cleaner
  4. Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 – Best Multi Purpose Motorcycle Carb Cleaner
  5. Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner – Best Budget Motorcycle Carb Cleaner
  6. Red Line 60102 Fuel System Cleaner – Best Value for the Money Motorcycle Carb Cleaner
  7. Meguiar’s Motorcycle EZ Clean Spray & Rinse (MC20016) – Best Exterior Motorcycle Carb Cleaner

1 WD-40 – 300134 Specialist Carb/Throttle Body & Parts Cleaner – Best Aerosol Motorcycle Carb Cleaner

Start your engines…

First in line is this option from WD-40. Everyone has heard of WD-40, haven’t they? They’ve been producing first-rate cleaners, lubricants, and solvents for over 50 years.

Can this one live up to their reputation?

This is an all-in-one cleaner. It’s designed to work on just about every part of the bike, from carb to throttle to the body. This makes it super convenient, as it removes the hassle of having to buy a variety of different products. It isn’t meant for inside the engine, though. This is for the exterior only. Don’t put it in the gas tank, hoping to flush out the line.

At 13.5 fl. Oz. the capacity here is pretty decent. It might not be the biggest can around, but it’s enough for most riders. Plus, as it’s an aerosol, it uses a minimal amount each time it’s needed.

How does it work?

It starts with that aerosol. While it isn’t great for the environment, it does mean that the fluid is sprayed with incredible force. A sturdy spray nozzle is included and fits the bottle perfectly with no leaks. As a result, it’s one of the easiest to use motorcycle carb cleaners you can buy.

From there, a powerful solvent gets to work. This formula eats away at carbon deposits, breaking them down for easy removal. The spray then helps by blasting away residue or other waste left behind.

Is it safe?

For most parts of the bike, yes. It won’t affect O2 sensors or catalytic converters. Be wary of using it on painted metal, though, as it could affect the paint job.

However, it does have a very strong smell. While it might not be dangerous, it sure is pungent! Try to avoid using this in an enclosed space, or prepare to deal with some lightheadedness.


WD-40 - 300134 Specialist Carb/Throttle Body & Parts Cleaner

Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Trusted brand.
  • Strong solution.
  • Wallet-friendly.

Cons

  • Unpleasant odor.
  • Can damage the paintwork.
  • External use only.

2 Red Line (60103) Complete SI-1 Fuel System Cleaner – Best Motorcycle Fuel System and Carb Cleaner

Get your motor running…

Next up in this hunt is a medium-sized item. With just 15 fl. Oz. of liquid and no aerosol, this one’s capacity is perhaps a little on the low side.

Why?

Because that’s all, it takes to get your carb running as good as new. This is a seriously concentrated formula. It’s a real pocket rocket, offering a huge amount of bang for your buck.

This could well be the best fuel system cleaner for motorcycle carburetors. And what’s more, it couldn’t be easier to use. Open the gas tank, pour the contents in, and as the engine runs, this liquid breaks down any nasty deposits.

And that’s not all…

It uses a blend of detergents, both low and high-temperature. That ensures it’ll work under just about any circumstances. It assists lightly used engines but can tackle heavily-soiled ones too.

This solution helps with fuel burn, too. Adding this cleaner to the tank improves the stability of the gas. Not only that, it prevents the build-up of gummy bits inside the tank, giving you a longer time between cleans. Making it one of the most effective motorcycle carb cleaners on the market.

Does it have any issues?

Not really. It does a fantastic job. And it’s safe for non-carb bikes with injectors and just about everything else as well. Okay, so it’s for single use. One purchase equals just one cleaning session. But with quality like this, do you need much more?


Red Line (60103) Complete SI-1 Fuel System Cleaner

Our rating:4.6 out of 5 stars (4.6 / 5)

Pros

  • Extremely effective.
  • Good price.
  • Preventative.

Cons

  • One time only.

3 LUCAS LUC10013 10013 Fuel Treatment – Best Concentrated Motorcycle Carb Cleaner

Good clean fun…

The next option in this quest to find the best carburetor cleaner for motorcycles is a heavy hitter. This weighs in at an enormous 8 pounds. That gives you a whole gallon of liquid. Therefore, it’s one of the best multiple use motorcycle carb cleaners available.

Why is it so big?

This one is a concentrate. So, it only requires a very small amount every time you clean. Around 1.5 fl. Oz. for every five gallons of gas should do the trick.

Which makes this an economical option. One bottle goes a long way. Plus, it’s pretty easy on the purse strings. Meaning it offers great value for money.

But does low cost mean low quality?

Absolutely not. You notice the difference when riding after using this product. The engine becomes so much smoother and is a lot quieter as well.

It doesn’t offer much in the way of protection, though. It’s a great remover, but there’s nothing here to defend against build-up. You’ll need to use this, again and again, to keep that engine in tip-top condition.

How do I use it?

It’s incredibly straightforward. When you next fill up the tank, just measure out the correct amount, and mix it in. Then reseal your gas tank and let the solution do the trick.

Luckily, it’s so easy to use, as this fluid comes with absolutely no instructions. First-timers might need to use google to find out what to do. And be sure to check your tank capacity to add the right amount of liquid.

Excellent quality, but…

There’s a lot to like here. The standard on offer is impressive, especially when you consider the awesome price. It’s just a pity that the lack of preventative measures let it down a bit.


LUCAS LUC10013 10013 Fuel Treatment

Our rating:4.8 out of 5 stars (4.8 / 5)

Pros

  • Huge!
  • Won’t hurt the pocketbook.
  • Long-lasting.

Cons

  • Cleaning only! No prevention.

4 Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 – Best Multi Purpose Motorcycle Carb Cleaner

Motorhead…

Now for another multi-purpose cleaner. This one promises a three-in-one experience.

Could it be the best motorcycle carb cleaner additive around?

Firstly, it works by improving horsepower. It can increase it a whole 2.6 percent. That might not sound like a lot, but in action, it does make a difference.

Then it enhances fuel economy. You should expect to see an improvement of around 3.2 percent. Hey, anything that helps gas last longer and keep costs down has got to be good, right?

Finally, it helps to reduce emissions. Your output of CO, NO2, and hydrocarbon should decrease by a fairly significant amount. And if you’re using it with a catalytic converter, then you can say you’re doing your bit for the environment. All of this makes it one of the best performance enhancing motorcycle carb cleaners on the market.

That sounds too good to be true! Is it?

Not at all! It has even more benefits than those already mentioned. The engine runs so much more smoothly after use. It’s quieter, too, as no deposits are making knocking sounds.

It even has preventative features. The formula works to prevent oxidation. That stops rust from building up, helping to avoid corrosion.

What’s the catch?

When it comes to really dirty motorcycles, this stuff works almost too well. It removes absolutely all crud inside, but if there’s a lot of it, it can end up causing blockages. You’d need to buy a second can to get rid of anything stuck inside.

However, that’s only for extreme cases. And it only goes to show how well this product works! This is, without a doubt, one of the best motorcycle carb cleaners out there.


Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722

Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Multi-purpose.
  • Effective.
  • Excellent value for money.

Cons

  • Can cause clogs in the case of heavy soiling.

5 Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner – Best Budget Motorcycle Carb Cleaner

Keep your hands clean…

This Liquid Moly cleaner is a budget-friendly option. Bargain hunters? This might be the best motorcycle carb cleaner for you.

But does it sacrifice standards for the price?

At a little over 10 fl. Oz, this one has a pretty small capacity. That means you’re probably only going to get one use out of it. So, while it might be cheap, if you’re using it regularly, then you’ll need to buy more than one. But happily, you shouldn’t need to use it all that often. This does a surprisingly good job for the price.

So, what does it offer?

There’s a noticeable improvement when it comes to cold morning start-ups. It can often take a while for an older motorcycle to get going, but this carb cleaner gives it a boost. Plus, the engine sounds better when it’s sitting and idling, too.

It also feels better at high speeds. That fluid works hard at breaking down those carbon deposits, meaning everything runs just that little bit smoother. It even enhances throttle response, giving you a safer driving experience.

There’s also the environmental aspect to consider. The solution does well to reduce emissions. And as another bonus, it’s meant for use with catalytic converters, giving it extra green credentials.

Any problems?

It’s not ideal for older motorcycles. On senior models, it can sometimes eat away at certain sealants. This is a pity, as it’s often the more over-the-hill bikes that have carburetors in the first place. That aside, there’s a lot to like here. And at a price like this, can you ask for much more?


Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner

Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Bargain basement price.
  • Improved performance.

Cons

  • Small bottle.
  • Not suitable for mature motorcycles.

6 Red Line 60102 Fuel System Cleaner – Best Value for the Money Motorcycle Carb Cleaner

Flush the fuel…

This search for the best carb cleaner fuel additive for motorcycles is almost at an end. But don’t leave without checking out this product from Red Line. This one is a serious contender.

What’s so great about it?

With a capacity of a tiny 4 fl. Oz. this is a modest little bottle. You might think it doesn’t look like it would provide enough fluid for even one tank of fuel. But that’s where you’re wrong.

That solution is so strong that even this minute amount will completely wash out the carb, the fuel line, and just about anything else. Motorcycles with smaller gas tanks could probably use half this amount and still get the same effect.

Safety first…

It may be powerful, but that doesn’t mean it runs the risk of damaging the bike. This cleaner produces great results with decreasing emissions and works perfectly with O2 sensors and catalytic converters.

Not only that, but it gnaws away at those carbon deposits to remove them entirely. There will be nothing left knocking around the system. Get extra gas mileage, throttle management, and more, all from this one miniature-sized product.

So, it must be expensive, right?

No! This is one of the cheapest options around. With quality such as this coming at such a low cost, it’s hard to argue with this being the best motorcycle carburetor cleaner you can buy.


Red Line 60102 Fuel System Cleaner

Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Amazingly powerful.
  • Extremely easy on the bank balance.
  • Great emission reduction.

Cons

  • I don’t think there are any.

7 Meguiar’s Motorcycle EZ Clean Spray & Rinse (MC20016) – Best Exterior Motorcycle Carb Cleaner

Spray the dirt away…

The final entry in this review is a spray bottle option. With 16 fl. Oz of liquid, it has a more than ample amount for getting that motorcycle clean. Although there’s a lot of fluid, it’s still a pretty reasonable price.

Does it work?

This one is a little different from most of the others. Instead of going inside the gas tank, it’s used for the outside of the carburetor. It clears off all that grime and muck that always builds up after a few long rides.

It works the same way that most exterior cleaners do. Spray on, leave for a few seconds, then wipe off with a damp cloth. It gets the job done quickly, leaving your chrome and other metal parts gleaming brightly in the sunlight.

How?

There’s a fast-acting foaming action to thank for that. Once sprayed on, it bubbles up, working its way into the dirt. It gets right in there underneath to shift it, making it a simple process to wipe off.

And that foam is completely safe for other parts of the bike, too. Use it to scrub up dull paintwork or to get those mirrors shining. This is a really handy aspect to have and can save money when buying other cleaning products as well.

Is there a downside?

It won’t do much to improve the performance of your motorcycle. Sure, it’ll look great. But to get that engine running smoothly, you’ll probably need to go elsewhere.


Meguiar’s Motorcycle EZ Clean Spray & Rinse (MC20016)

Our rating:4.5 out of 5 stars (4.5 / 5)

Pros

  • Large capacity.
  • Leaves the exterior looking beautiful.

Cons

  • Won’t flush out impurities inside.

Best Motorcycle Carb Cleaners Buying Guide

Best Motorcycle Carb Cleaners Buying Guide

Choosing the right carb cleaner isn’t easy. When you’re introducing any kind of chemical solution to a motorcycle, there’s always some risk involved. So, what do you need to look for?

What’s the best way to clean a motorcycle carburetor?

There’s a choice here. You can wash the outside or flush out the inside. It is important to keep that exterior free from too much built-up muck. So, a spray down with a cleaning fluid every so often is a good idea.

Be careful, though…

The solution you choose might not be suitable for every part of the bike. Read the bottle first to see if you need to keep it away from the paintwork or seat fabric.

Some clean out the carb from the inside. These are usually easy to use. Measure out the appropriate amount for your tank size, pour it straight in with the fuel, then get that engine running to let the magic happen.

These interiors cleaners are the most useful when it comes to performance, as they break down those horrible lumps of carbon that form in the engine. Using one can improve fuel consumption, help with the throttle, and even increase horsepower. They often assist with emission reduction as well. So they’re a good idea for older motorcycles.

How much do I need?

You’ll be happy to hear that size doesn’t always matter! A container of cleaner may be small, but strength is more important than capacity. As long as you don’t need more than one bottle per use, then it’s probably a decent product.

However, be sure to check how much fuel the tank can hold and how much cleaner it needs. It’s easy to make a mistake and mix too little in with the gas. If you don’t use enough of the product, then it will be less effective.

Safety

Be careful when pouring the contents into the tank. Some can have a damaging effect on the body of the bike. If there are any spills, be sure to wash with water and then dry quickly with a soft cloth.

And some can also be quite pungent! The odor coming from the chemicals can make the eyes water. Only use these cleaners in a space with proper ventilation.

Oh, and one more thing…

It’s always tempting to choose the cheapest or largest bottle. But big isn’t always better, and neither is the lowest price. Weigh up the options, and always choose a cleaner that offers the most bang for your buck.

Looking for Great Motorcycle Care Products and Accessories?

We have a nice selection of motorcycle items. Check out our in-depth reviews of the Best Motorcycle Cleaners, the Best Motorcycle Tank Sealer, the Best Motorcycle Windshield Cleaners, the Best Motorcycle Chain Lubes, the Best Motorcycle Covers, and the Best Motorcycle Exhaust Systems you can buy in 2021.

Also, have a look at our comprehensive reviews of the Best Motorcycle Riding Suits, the Best Motorcycle Tire Changers, the Best Motorcycle Leg Bags, the Best Motorcycle Tank Bags, and the Quietest Motorcycle Helmets currently on the market.

What are the Best Motorcycle Carb Cleaners?

Picking a winner is never easy. But one product here stood out above the rest. You’ve guessed, it’s the…

Red Line 60102 Fuel System Cleaner

Quite simply, it’s the most effective. The increase in performance it offered was impressive, and the reduction in CO2 it provides is admirable. Add the sheer strength of the solution, and the decision was clear. And that incredibly reasonable price helped, too.

So, happy riding, folks!

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