FAQs

ADAS Service

EV Service

Tire Service

Auto Scanner

About EV

About Maintenance

• 381.

  Is Liqui Moly good for GDI engines?

  Liqui Moly is generally considered a well-known brand in automotive lubricants and additives. They offer a variety of products including engine oil and fuel system cleaners. However, specific product formulations may vary, and it is critical to select a product that is compatible with gasoline direct injection (GDI) engines.
  
  Due to the direct injection of fuel, GDI engines are prone to carbon buildup on the intake valves and other components. Some fuel system cleaners are designed to solve these problems by removing deposits and improving overall engine performance.
  
  Before using any product, including Liqui Moly's products, it is recommended to check the product specifications and ensure they are suitable for GDI engines. You can find this information on the product label or on the manufacturer's website. Additionally, consulting the vehicle's owner's manual and seeking advice from the vehicle manufacturer or a qualified mechanic is always good practice to ensure compatibility and correct use.
  
• 382.

  Will fuel injector cleaner help rough idle?

  Yes, injector cleaner can sometimes help improve a rough idle if the roughness is related to an injector problem. A rough idle can be caused by a number of factors, and if it's caused by clogged or dirty fuel injectors, using a high-quality fuel injector cleaner may help solve the problem.
  Here's how:
  ① Clean the fuel injector: Fuel injector cleaner is designed to break down and remove deposits, varnish and carbon deposits on the fuel injector. This cleaning action restores proper fuel atomization and distribution, resulting in a smoother engine operation.
  ② Improve combustion: Cleaning fuel injectors helps improve fuel combustion efficiency. This helps prevent misfires and irregular combustion, resulting in a more stable, smoother idle.
  ③ Optimize fuel flow: If the fuel injector is partially blocked or the fuel injection is uneven, it may cause unstable idle speed.  Injector cleaner improves injection patterns and ensures a more consistent flow of fuel to the engine.
  ④ Optimize fuel flow: If the fuel injector is partially clogged or the fuel injection is uneven, it may cause unstable idle speed. Injector cleaner improves injection patterns and ensures a more consistent flow of fuel to the engine.
  It's worth noting that while injector cleaner may be effective in some situations, it may not solve all causes of a rough idle. Other factors, such as faulty spark plugs, faulty sensors, vacuum leaks, or air intake system problems, can also cause a rough idle.
  
• 383.

  What does a faulty injector sound like?

  A faulty fuel injector may produce noticeable sounds that differ from the normal operation of a properly functioning injector. Here are some potential sounds associated with a faulty injector:
  
  ① Clicking Sound Variation:
  Fuel injectors typically make a clicking sound when they operate, as they open and close to deliver fuel to the engine. If an injector is faulty, the clicking sound may be irregular or absent. A consistent and rhythmic clicking is usually a sign of a healthy injector.
  ② Tapping or Knocking Noise:
  A faulty injector might produce tapping or knocking noises, which could be more pronounced during idle or acceleration. This may be a result of inconsistent fuel delivery to the cylinder.
  ③ Hissing or Popping Sounds:
  In some cases, a malfunctioning injector may cause a hissing or popping sound. This could be due to issues like a stuck open injector or a leak, causing excess fuel to enter the combustion chamber.
  ④ Misfire Noise:
  A misfiring injector can lead to a misfire in the engine. This can result in irregular combustion, causing noises like sputtering, popping, or a noticeable lack of smoothness in the engine's operation.
  ⑤ Exhaust Noise Changes:
  A faulty injector might also impact the exhaust note. You may notice changes in the exhaust sound, such as pops, backfires, or irregular exhaust pulses.
  
• 384.

  Can I soak injectors in injector cleaner?

  Soaking your injectors in injector cleaner is not a common or recommended practice. Fuel injectors are precision components with specific internal components, such as nozzles and valves, that may not be designed to withstand prolonged exposure to certain chemicals. Additionally, soaking the injectors on the outside of the engine may result in incomplete cleaning because the cleaner may not flow through the injectors as it would when the engine is operating normally.
  
  Injector cleaners are generally designed to be added to the fuel tank, rather than soaked in, to mix with the fuel and pass through the fuel system during normal driving. The cleaner then breaks down and removes deposits and carbon buildup from the injectors.
  
• 385.

  Are fuel injector cleaners safe?

  When used according to the manufacturer's instructions, fuel injector cleaners are generally considered safe for your vehicle.
  Follow Instructions: Always follow the manufacturer's instructions provided on the product label. This includes recommended dosages, mixing ratios, and any specific instructions for your vehicle. Choose a reputable brand: Choose an injector cleaner from a reputable brand. Low-quality or poorly formulated detergents can have adverse effects.
  Compatibility: Make sure the cleaner is compatible with your vehicle’s engine and fuel system. Some cleaners may be specially formulated for certain types of fuel or engines.
  Use as directed: Do not exceed recommended dosage. Using too much detergent can be counterproductive and may have a negative impact on your fuel system.
  Ventilation: When adding cleaner to the tank, do so in a well-ventilated area to avoid breathing fumes. Also, avoid skin contact with cleansers.
  Safe storage: Store fuel injector cleaner safely away from children and pets. Please follow any storage instructions provided by the manufacturer.
  
  While fuel injector cleaners are generally safe, it's important to note that they are designed for preventive maintenance and gentle cleaning. If you are experiencing serious fuel system problems, it is recommended to consult a professional mechanic.