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• 386.

  What do mechanics use to clean fuel injectors?

  Mechanics often use specialized injector cleaners to clean injectors. These cleaners are specially formulated chemicals designed to break down and remove deposits, varnish and carbon buildup on fuel injectors over time. These deposits can negatively impact fuel injector performance, affecting fuel atomization and combustion efficiency. 
  
  Fuel injector cleaners are typically available as additives that can be mixed with the fuel or introduced directly into the fuel injection system as a concentrated solution. Some mechanics also use professional-grade cleaning equipment that includes pressurized cleaning solutions to thoroughly clean fuel injectors.
  
  Manufacturer's recommendations and guidelines must be followed when using injector cleaners to ensure proper and safe use. Regular maintenance and occasional use of injector cleaner can help keep your fuel injection system clean and maintain optimal engine performance. If there are major problems with the injectors, they may need to be professionally cleaned or replaced.
  
• 387.

  What should you never do in a CVT?

  While continuously variable transmissions (CVTs) are becoming more common in modern vehicles, drivers should still consider certain precautions and practices to ensure the longevity and optimal performance of their CVT. Here are some things to avoid doing in a CVT:
  ① Traction exceeds capacity:
  CVTs may have specific towing capacity limitations. Towing loads that exceed recommended capacities may place undue stress on the transmission, possibly causing overheating and accelerated wear.
  ② Neglect maintenance:
  Regular maintenance is vital to the health of any transmission, including a CVT. Neglecting to change your transmission fluid at recommended intervals may result in reduced performance and increased wear.
  ③ Hard acceleration from standstill:
  While CVTs are designed to provide smooth acceleration, aggressive and rapid acceleration from a dead stop can put stress on transmission components. It is recommended to accelerate gradually and let the CVT adjust smoothly.
  ④ Driving aggressively in hilly terrain:
  Continued aggressive driving in hilly terrain, especially without proper maintenance, can cause CVT temperatures to increase and pressure to increase. If you regularly drive in challenging conditions, make sure your CVT is well maintained.
  ⑤ Ignore warning lights or signs:
  If a transmission-related warning light appears on your dashboard, or you notice unusual noise, vibration, or performance issues, these issues must be addressed immediately. Ignoring warning signs can lead to more serious problems down the road.
  ⑥ Using the wrong liquid:
  Always use the manufacturer's recommended CVT transmission fluid. Using the wrong type of fluid can cause damage and reduced performance.
  ⑦ Engaging in "Neutral Drops":
  Avoid placing the vehicle in neutral and then quickly shifting back into drive (called "neutral drop"). This practice can cause excessive wear on transmission components.
  ⑧ Place your feet on the brake and accelerator pedals at the same time:
  Pressing the brake and gas pedals at the same time puts unnecessary stress on the CVT. It is recommended to use one foot per pedal and avoid pressing both pedals at the same time.
  ⑨ Failure to stop completely before shifting gears:
  When shifting from forward to reverse or vice versa, it is important to come to a complete stop before making the change. Sudden gear changes without stopping can stress the transmission.
  ⑩ Modify the transmission system:
  Avoid making unauthorized modifications to the CVT or vehicle’s drivetrain. Changing systems without appropriate knowledge or authority can result in unintended consequences and potential damage.
  
• 388.

  Is CVT more reliable than automatic?

  The reliability of a continuously variable transmission (CVT) compared to a conventional automatic transmission depends on a variety of factors, including the specific design and engineering of the transmissions, and how well they are maintained. Both CVT and conventional automatic transmissions have their advantages and potential disadvantages:
  
  Advantages of CVT:
  ① Fuel efficiency: CVTs are more fuel-efficient than traditional automatic transmissions because they allow the engine to continuously run in the most efficient speed range.
  ② Smoothness: CVT provides smooth, seamless acceleration without the traditional "shift" feeling that an automatic transmission can have.
  
  Potential disadvantages of CVT:
  ① Durability issues: Some early CVTs had durability issues, and there have been reports of issues such as overheating and premature failure. However, improvements have been made over the years, and newer CVT designs are generally more reliable.
  ② Repair costs: CVT repairs can be more complex than traditional automatic transmission repairs, and in some cases even more expensive. It is critical to follow the manufacturer's recommended CVT maintenance schedule.
  
  Advantages of traditional automatic transmission:
  ① Widely adopted: Traditional automatic transmissions have been used for many years, and their design and technology are very mature. They have a long history of reliable performance.
  ② Performance under certain conditions: In some cases, traditional automatic transmissions may be more suitable for towing or heavy-duty applications because they can provide more direct power transfer.
  
  Potential disadvantages of traditional automatic transmissions:
  ① Fuel efficiency: A traditional automatic transmission may not be as fuel efficient as a CVT, especially if the engine is not running in the optimal rpm range.
  ② Perceived “Jerky” shifts: Some drivers may find that traditional automatic transmissions shift less smoothly compared to the continuously variable operation of a CVT.
  
  Ultimately, transmission reliability depends on the specific make and model of the vehicle, maintenance, and the driving conditions the vehicle experiences. Modern CVTs have improved in reliability and many manufacturers use them in their vehicles. Whether it's a CVT or a traditional automatic transmission, it's critical to follow the manufacturer's recommended maintenance schedule and maintain your vehicle to ensure the longevity and reliability of your transmission.
  
• 389.

  How can you tell if your transmission filter is clogged?

  A clogged transmission filter can cause a variety of problems with your vehicle's transmission. Here are some signs that may indicate a clogged transmission filter:
  ① Sliding gear:
  If your transmission filter is clogged, it can restrict the flow of transmission fluid. This restriction can cause delayed or erratic shifts, causing the transmission to slip in and out of gears unexpectedly.
  ② Difficulty Shifting:
  A clogged filter blocks the normal flow of transmission fluid, making it difficult for the transmission to shift smoothly. You may feel hesitation or resistance when trying to make the transition.
  ③ Overheat transmission:
  A clogged filter reduces the effectiveness of the transmission fluid in cooling the transmission. This can cause the operating temperature to rise, causing the transmission to overheat.
  ④ Abnormal noise:
  Insufficient fluid flow due to clogged filters can lead to increased friction and wear on transmission components. This can cause unusual noises such as whining, grinding, or clunking when the vehicle is in gear.
  ⑤ Slow transmission or no response:
  A clogged filter can affect the overall performance of your transmission, causing it to feel sluggish or unresponsive. Acceleration may be slower, and the vehicle may not respond to throttle inputs promptly.
  ⑥ Liquid leakage:
  In some cases, a clogged filter can cause pressure to build up within the transmission, causing fluid leaks. If you notice red or brown transmission fluid under your car, this could be a sign of a leak due to increased pressure.
  ⑦ Warning light:
  Some vehicles have a transmission temperature warning light on the dashboard. This light may come on if the transmission is overheating due to restricted fluid flow.
  
  If you suspect a clogged transmission filter, the problem must be addressed immediately to prevent further damage to the transmission. Regular maintenance, including changing the transmission filter and fluid according to the manufacturer's recommendations, helps prevent clogs and ensures your transmission runs smoothly. If you experience any of the above signs, it is recommended to consult a qualified mechanic for a thorough inspection and appropriate repairs.
  
• 390.

  Can flushing transmission cause problems?

  While a transmission flush is a common maintenance procedure, there are some caveats and potential risks associated with it. Here are some factors to pay attention to:
  ① Dislodging Particles:
  Flushing involves using a machine to force a cleaning solution through a delivery system to remove old fluid and contaminants. During this process, particles shed during flushing may circulate and potentially cause blockage of smaller channels. If the transmission is poorly maintained and very dirty, flushing can cause problems if the transmission agitates and moves too many particles.
  ② Possibility of leakage:
  The forceful nature of a transmission flush can cause debris that acts as a seal in a worn or damaged transmission to dislodge. This may cause leaks or other problems.
  ③ Incompatible cleaners:
  Using cleaners that are incompatible with transmission components may cause damage. It is important to use the correct type of cleaning solution recommended by the vehicle manufacturer.
  ④ Manufacturer’s recommendations:
  Some vehicle manufacturers recommend against flushing the transmission, preferring to change the fluid. Be sure to check your specific vehicle's owner's manual to follow the manufacturer's guidelines.
  ⑤ Sealed transmission device:
  Some modern vehicles' sealed transmissions don't have a dipstick, which makes checking fluid levels difficult. In this case, it's best to follow the manufacturer's recommended maintenance schedule without unnecessary flushing.
  ⑥ High mileage vehicles:
  For high-mileage vehicles that don't have their transmission regularly maintained, flushing may remove deposits that provide some degree of sealing or protection. This could cause problems if the transmission relies on these deposits to maintain functionality.