Get your can and spray the liquid on the carburettor. Make sure you don't go overboard with spraying the liquid as it may end up harming the device. Rest assured that WD-40 is potent enough to work its magic even if it is sprayed decently on the carburettor.
There are many different types of plastic, but there are two kinds that you should avoid using WD-40 on—polycarbonate and clear polystyrene plastic. Polycarbonate is a transparent plastic that is commonly used in greenhouses, and polystyrene is typically used for styrofoam and soft drink lids among other items.
The spray isn't actually a lubricant. The WD stands for “water displacement” and it's made to push water away so you can clean metal that's been exposed to moisture. Water displacing penetrating oils (such as WD-40) will soften plastic, nylon or rubber components, which is especially bad if you have nylon rollers.
WD-40 Specialist® Carb/Throttle Body & Parts Cleaner with attachable precision straw is the only all-in-one carburetor cleaner spray you will need to clean your carburetor, throttle body, and unpainted metal parts.
However, it's important to use a non-corrosive cleaner which doesn't harm or degrade any plastic or rubber pieces on the carburetor. You should avoid using vinegar, because the acetic acid makes metal susceptible to rust.
Drive out moisture from flooded engines. From tractors to cars to lawnmowers, WD-40® Multi-Use Product can displace excess moisture from flooded engines. Make sure your engine is turned off, then spray the original WD-40 formula into the carburetor before re-starting the engine.
WD-40 removes carbon residue and keeps moisture away from spark plugs and spark plug wires. WD stands for Water Displacement, so if your spark plugs are wet or you need to drive moisture away from ignition distributors, WD-40 will do the trick.
Generally speaking, you should only ever use carb cleaner to clean your carburetor (if your vehicle has one), whereas you can use brake cleaner to clean your brakes and many other mechanical components.
Shoot a substitute fuel (WD-40 or PB Blaster Lawn Mower Tune-Up) into the carburetor throat and then try starting the engine (Photo 1). If it won't start or fire with spray fuel, you probably have an ignition system problem, most likely a bad ignition coil.
Can I Spray Carb Cleaner Inside the Spark Plug Hole? Yes, you can spray carb cleaner (or carburetor cleaner) inside the spark plug hole. This'll help dissolve the hardened debris and loose materials in the spark plug well. After that, you can remove the filth with a compressed air can.
You need to take the air filter off and spray it directly into the carb for maximum effect. Spraying into the air filter will do very little.
It is safe for metal, rubber, wood and plastic. WD-40 can be applied to painted metal surfaces without harming the paint. Polycarbonate and clear polystyrene plastic are among the few surfaces on which to avoid using a petroleum-based product like WD-40.
WD-40 is a lubricant dissolved in a solvent. While it can break down grease and oil to a certain degree, it also adds back some. This might be desirable if you are cleaning a hinge, conveyor, or corrosive-prone part, but not if you need it truly clean.
It's hard to find a pantry without some type of cooking oil inside. Whether it's olive, canola, or vegetable oil, its uses can extend past the kitchen as a cheap WD-40 alternative. The greasy texture of cooking oil makes it a great lubricant, and it's a good multipurpose oil, too.
It took them 40 attempts to get the water displacing formula worked out. But they must have been really good, because the original secret formula for WD-40®—which stands for Water Displacement perfected on the 40th try—is still in use today.