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Questions and answers from the Car Doctor Troy Record

I had to wait for the recall notice to be posted on the Acura website to know that the issue was not unique to my vehicle.

The Recall Notice

The recall notice was posted on the Acura website on [insert date] and affected approximately 1,400 vehicles. The affected vehicles are the 2019 Acura MDX with the engine code 3.5L V6.

The engine was then run at a lower compression ratio to reduce the knock, but this only made the knock worse. The engine was then run at a higher compression ratio to increase the engine performance, but this also made the trouble worse. The engine was then run at a higher compression ratio than the manufacturer’s recommended, but this was not the solution to the problem.

The Mystery of the Engine Knock

The engine knock, also known as pinging or pinking, is a common problem that can occur in internal combustion engines. It is characterized by a knocking or pinging sound that can be heard when the engine is running.

The Mysterious Case of the Dead Battery

The mysterious case of the dead battery has been puzzling car owners for years. Despite numerous attempts to diagnose and fix the issue, the problem persists. In this article, we will delve into the possible causes of a dead battery and explore some potential solutions.

Possible Causes of a Dead Battery

A dead battery can be caused by a variety of factors, including:

  • Overcharging: This occurs when the battery is charged for an extended period, causing it to become overcharged and eventually die. Undercharging: This occurs when the battery is not charged for a sufficient amount of time, causing it to become undercharged and eventually die. Corrosion: This occurs when the battery terminals become corroded, preventing the battery from holding a charge. Age: As batteries age, they can become less efficient and eventually die.

    B. I think you’ve done a good job of identifying the problem, but you may need to dig deeper to find the root cause. C.

    Understanding the Charging System

    The charging system is a critical component of a vehicle’s electrical system, responsible for maintaining the battery’s charge and powering the vehicle’s electrical systems. A well-functioning charging system is essential for a vehicle’s overall performance and safety.

    Common Issues with the Charging System

  • Faulty alternator
  • Bad battery
  • Corroded or damaged wiring
  • Loose or corroded connections
  • Faulty voltage regulator

    • Symptoms of a Faulty Charging System

  • Dim or flickering headlights
  • Slow engine crank
  • Clicking or grinding sounds from the alternator
  • Battery warning lights on the dashboard
  • Electrical system malfunctions

    • Troubleshooting the Charging System

    To diagnose a faulty charging system, it’s essential to follow a systematic approach. Here are the steps to follow:

  • Check the basics: Ensure the battery is properly connected, and the alternator is grounded. Use a multimeter: Measure the voltage at the battery terminals and the alternator output. Check the wiring: Inspect the wiring for signs of damage, corrosion, or wear. Test the alternator: Use a scan tool to check for charging system codes and test the alternator’s output.

    The Evolution of Engine Oil Viscosity

    Engine oil viscosity has undergone significant changes over the years, driven by advances in technology and a better understanding of engine performance. In the past, engine oil was thicker and more viscous, requiring longer warm-up times to reach optimal lubrication levels.

    The Early Days of Engine Oil

  • Thicker and more viscous oil was used in older engines, which were less efficient and produced more heat.

    Is the 87 Octane Gas to Blame for My Car’s Rougher Running?

    I have been using the 87 octane gas for about 6 months now. I have noticed a difference in the higher mileage, but I am not sure if it’s the gas or the car. I have also noticed that the car has been running a bit rougher than usual, but that could be due to other factors such as age and wear and tear. I am not sure if the 87 octane gas is the cause of the rougher running, but I am considering it as a possible factor. I am also considering the possibility that the car is just getting older and that’s the cause of the rougher running. I am not sure what the exact cause is, but I am considering the rougher running as a possible factor in the increased mileage.

    The Mystery of the 87 Octane Gas

    The use of 87 octane gas in my 2019 Subaru Forester Sport has been a topic of interest for me. I have been using this type of gas for about 6 months now, and I have noticed a difference in the higher mileage. However, I am not sure if it’s the gas or the car that’s causing the issue.

    Factors to Consider

  • Gas quality: The type of gas used can affect the performance of the engine. 87 octane gas is considered a high-octane fuel, which can help to improve the engine’s performance and efficiency. Car age and wear and tear: As the car gets older, it can experience wear and tear on its engine and other components. This can lead to a rougher running engine and decreased fuel efficiency. Driving habits: The way you drive your car can also affect its performance and fuel efficiency.

    Got a car question? Email the Car Doctor for a personal reply. jpaul@aaanortheast.com

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