San Carlos Auto Repair

Anyone who drives a gasoline car regularly should be familiar with the most common types of maintenance, especially when overlooking them can compromise one's safety. In addition to damaging the performance and mechanics of the car itself, neglecting to change spark plugs regularly can put drivers at risk of untimely or dangerous breakdowns. Here's how to know when to replace spark plugs. What Is a Spark Plug? Spark plugs are composed of a metal center electrode, an outer casing made of steel, and a ceramic insulator which contains an air gap. While the car runs, the spark plug transfers an electrical charge of very high voltage from the ignition coil outside of the engine and brings it into the combustion chamber inside of the engine. This results in a spark which lights the fuel in the engine, giving the car energy. The Lifespan of a Spark Plug How long a spark plug can go before being replaced varies by what type of spark plug is in the car. Copper tip spark plugs can la ... read more

When NBC News surveyed Americans about their car maintenance habits in 2016, only 26 percent of drivers stated they were "confident" about how to change their car oil. While 14.9 percent was "somewhat confident," 23.1 percent was "not very confident," and a whopping 36 percent reported feeling "clueless." For these confused drivers, there's bad news: overlooking an oil change long-term can do some serious damage to one's car. Why Changing Engine Oil Is Important Most people are familiar with the importance of changing the oil in their car, but many don't understand exactly why it is so important. Because cars have so many moving parts, they can rub together and result in friction and heat. Oil is necessary to lubricate the engine and reduce the amount of heat it produces, preventing overheating and engine damage. However, because engine oil is subjected to such high levels of heat, it can break down over time and become less efficie ... read more

For most people, the name Felix Wankel doesn't ring a bell, but car aficionados around the world are familiar with the pioneering inventor of a one-of-a-kind rotary engine. After the Wankel engine's development, this pistonless powerhouse was often associated with Japanese automaker Mazda, which produced the Mazda Wankel rotary engine from 1967 to 2012. The Engine  Truly elegant in its design and function, this rotary engine has no piston-driven cylinders. A single triangular rotor spins around an off-center axle within an oval-shaped chamber. Unlike a piston engine, it exerts exclusively rotational forces using only two moving parts. This simplicity creates fewer vibrations, resulting in a smoother and quieter ride. The Mazda Wankel engine's streamlined design allowed for much faster acceleration, but early models suffered from seal and stability issues during sustained high-speed rotations, which sometimes required ... read more

It's a familiar situation for many drivers: a vehicle starts pulling hard to the left or right while on the road. When this happens, it’s often time for a wheel alignment. A wheel alignment is a necessary car service that keeps a vehicle performing at its best. But why do wheels need to be aligned, and how do drivers know when to do it? Why Is a Wheel Alignment Necessary?  New vehicles are pre-set with their tires positioned at a very precise alignment, which must be maintained for optimal performance. The vehicle drives smoother and tires last longer when all four are pointed in the same direction. Wheels that are out of line will see uneven tire wear, a shorter lifespan, and poor drivability. Plus, a smoother ride requires less fuel, which can lead to savings on gas, too. Drivers can check for these four signs that an alignment may be needed. Pulling to One Side When tires are properly aligned ... read more

A brake pedal should feel firm and tight to quickly stop a moving vehicle. A pedal that lacks a distinct firmness may have problems stopping the car, threatening the safety of the driver and passengers. Drivers experiencing sponginess in their brake pedals should visit a mechanic. Air in the Brake Line Brakes operate by evenly distributing fluid through a hydraulic pressure system to reduce speed. Brake fluid is the only thing that should be in the brake lines. If air seeps into the lines, it can prevent the flow of brake fluid, reducing pressure and increasing the vehicle’s stopping time and distance. The driver will experience a soft brake pedal and notice difficulty when stopping. Bad Disc Brake Calipers To decrease speed, disc brake calipers clamp the brake pads down on the rotors. This produces significant amount of heat, causing caliper corrosion over time. This corrosion causes internal pistons to leak brake fluid, resulting again in a spongy brake pedal. Bad Brake Flu ... read more

Gas is expensive, and filling up with premium gas in San Carlos can cost well over four dollars per gallon. Fortunately, regular unleaded gas works well in most vehicles. However, if an automaker requires premium gas, failing to use it can cause serious engine damage. Here’s why it’s critical to follow the manufacturer’s fuel guidelines. Understanding the Octane Difference  The key difference between regular and premium fuels is the octane rating. When gas and air ignite before they should, an explosion called a pre-ignition occurs, causing a knocking sound in the engine. Fuel is given an octane rating based on how well it resists pre-ignition. Premium gas, typically rated at 90 or above, is less prone to pre-ignition and contains additives that help engines run cleanly. Required vs. Recommend Fuel Some owner’s manuals “require” premium fuel, while others “recommend” it. Though this may seem like a semantic difference, some vehic ... read more

Pops, hisses, and sizzles are great when cooking steak but not when they’re coming from the engine of a vehicle. Unusual noises coming from the hood, brakes, or underside of a car can be indicative of serious problems. Drivers who hear strange sounds should take their car to a mechanic for maintenance as soon as possible. Alarming Noises Under the Hood  A loud, squealing noise coming from under the hood is likely caused by a loose or worn serpentine belt, which powers the car’s major systems. Once the belt snaps, drivers are left with a vehicle that won’t move. If a car makes hissing or sizzling noises after the engine is turned off, the most likely issues are coolant or oil leaks, an overheated engine, or leaking vacuum lines. Knocking or tapping noises can be caused by a number of issues, including ignition problems, clogged fuel filters, or damaged or dirty spark plugs. Even using fuel that’s a lower grade than the owner’s manual specifies can ca ... read more

Why Are My Brakes Squeaky? Typically, before you need new brakes, the brakes will wear down, touch the brake warning indicator sensor, and cause a squeaky noise when you apply the brakes. This squeaky brake noise can also be caused the worn brake pads, damaged brake rotors, worn brake shoes, worn brake hardware, or simply a lack of lubrication on brake contact points. What is the squeaky noise when I reverse? A squeaking noise that we commonly hear from our client’s vehicles at A+ Japanese Auto Repair Inc. is from a brake pad component called the brake warning indicator or brake wear tab. The picture to the right shows the tab of metal called the wear indicator. This tab will touch the rotor when the pad is very low and will typically sound like a squeaking or whining noise as it vibrates over the brake rotor. Only quality brake pad manufacturers install pads with wear indicators. The wear indicator is a tab of sheet metal that gives a drive ... read more

A brake flush is a service in which the brake fluid is flushed from the brake master cylinder, through the brake line, hoses, calipers, and then the fluid is expelled out through the brake bleeder screws. During the brake flush, the dirty brake fluid that is getting flushed is replaced by new brake fluid. How often should I flush my brake fluid? Vehicle manufactures recommend to flush brake fluid every 2-3 years or every 24,000 - 36,000 miles. A brake fluid flush is recommended often because the brake fluid is hygroscopic, which means, it will absorbs moisture from the air. The more moisture that the brake fluid absorbs, the less effective the brake fluid will be in dealing with heat and protecting the brake components. How much does a brake fluid flush cost? Brake fluid flush cost will range from $95 - $225 based on the type of fluid and the type of vehicle. Normal passenger cars will cost less because they typically use DOT3 brake fluid while ... read more

How Do I Know If I Need New Brakes? We put together a list of brake symptoms to help you know if you need new brakes. The brake warning light stays on the dash while driving. Squealing is heard from the brakes while reversing the vehicle. The steering wheel shakes while applying the brake pedal. You can hear grinding or squealing when applying the brake pedal. The emergency brake no longer holds the vehicle when the brake is applied. The brake pedal feels soft, spongy, or slow to respond. The brake pedal does not engage the brakes at it’s normal height. The stopping distance increased beyond the usual stopping distance. Vehicle pulls to one side when applying the brakes. If any of these braking symptoms are present, you could need new brakes. We always recommend to have your brake system inspected by a professional to determine if you need new front brakes, new rear brakes, new brake master cylinder, new brake hose, l ... read more