https://www.facebook.com/107890445746392/

Tool Tech, 482 3rd Ave, New York, NY, United States, 10016, New York, NY (2025)

11/28/2025

the fundamental geometric dimensions that govern how your car's tires meet the road: Camber, Toe, and Caster. Collectively known as Wheel Alignment, these angles are the single most critical factor determining your vehicle's stability, steering responsiveness, and tire lifespan. If any of these angles are off, you risk erratic handling and extreme tire wear.
1. Camber Angle: The Side Tilt of the Wheel
Camber refers to the inward or outward tilt of the wheel when viewed from the front:
Negative Camber: The top of the wheel tilts inward toward the car body. This is often used to maximize cornering grip in performance vehicles but can lead to increased wear on the inner edge of the tire.
Positive Camber: The top of the wheel tilts outward away from the car body. This is less common in modern vehicles and tends to increase outer tire edge wear.
2. Toe Angle: The Parallelism of the Wheels
Toe describes whether the front edges of the wheels are closer together or farther apart when viewed from above:
Toe In: The front of the wheels points slightly toward each other. This generally promotes straight-line stability and reduces excessive steering sensitivity.
Toe Out: The front of the wheels points slightly away from each other. This can improve turn-in response but may lead to high-speed instability. Incorrect Toe settings are the number one cause of rapid, feather-edge tire wear.
3. Caster Angle: The Fore/Aft Tilt of the Steering Axis
Caster refers to the forward or backward tilt of the steering axis (the imaginary line the wheel pivots on) when viewed from the side:
Positive Caster: The top of the steering axis is tilted towards the rear of the car. This is the preferred angle in most cars because it:
Increases high-speed stability.
Helps the wheels automatically return to the straight-ahead position after turning (similar to shopping cart wheels).
Negative Caster: The top of the steering axis is tilted towards the front of the car. This makes the steering feel light but severely compromises stability and self-centering action.
When Do You Need an Alignment?
You should have your alignment checked after any suspension or steering system repair, or if you notice any of the following signs:
The car pulls or drifts to one side when driving on a straight, level road.
Uneven or excessively fast tire wear.
The steering wheel is not straight when the vehicle is driving straight.

11/28/2025

When an engine cranks but won't start: if it cranks, the battery, starter motor, and main fuses have already been tested.

The next step is to identify what's missing among the three essential systems for an engine to start: spark, fuel, or the CKP sensor signal. Addressing these three points in order allows you to solve the problem quickly without getting into complicated diagnostics.

The first step is always to check for spark. The most direct way is to remove a spark plug, ground it, and crank the engine. If there's a spark, you can continue checking for fuel; if there's no spark, the culprit is almost always a lack of a CKP signal, a coil without power, or an ECU that isn't activating the ignition. Here's the key: when the CKP sensor doesn't send a signal, spark is automatically lost, as is the injection pulse, because the computer doesn't detect that the engine is cranking.

Next, check for fuel. When you turn the key to the "on" position, the fuel pump should squeal for two or three seconds. If it doesn't, the problem is usually with the fuel pump relay, fuse, or connector. If the fuel pump is activating, the next step is to measure the fuel line pressure. When the pressure is below normal, the cause is usually a weak pump, a clogged filter, or a damaged regulator.

Next, check the injection pulse using a no-flash device or even a multimeter for quick tests. If there is a pulse, the problem remains fuel-related because there is a command but no pressure or flow. If there is no pulse, the path again points to the CKP sensor, damage to the injector wiring, or the ECU entering protection mode because it is not receiving engine timing signals.

Finally, the CKP sensor is the primary cause of problems when an engine cranks but won't start. If there is no spark or injection pulse, the most logical steps are to check its wiring, connector, signal status, or simply replace it if it is dead. Without the CKP signal, the ECU doesn't "know" that the engine is cranking and therefore doesn't activate either spark or injection. This sequence allows you to solve the problem without complications and pinpoint exactly where the fault lies.

11/28/2025

🚗⚙️ Brake Fluid Only Needs Changing When It Looks Dirty

Many drivers believe that brake fluid only needs to be replaced when it changes color or looks heavily contaminated, but this idea is dangerous and can seriously compromise vehicle safety.

🔴 MYTH (Change it only when it looks dirty):
1️⃣ It's believed that as long as it maintains an acceptable color, it's still working properly.

2️⃣ Assuming stable performance regardless of usage time.

3️⃣ Ignoring the moisture that the fluid absorbs over time.

🟢 FACT (What actually happens):
1️⃣ The fluid absorbs water even when it looks clean.

2️⃣ As moisture increases, the boiling point drops dangerously.

3️⃣ This can cause spongy braking or complete brake failure.

🟢 FACT (What actually happens):
1️⃣ The fluid absorbs water even when it looks clean.

2️⃣ As moisture increases, the boiling point drops dangerously.

3️⃣ This can cause spongy braking or total brake failure. 4️⃣ Regular maintenance prevents serious failures.

👉 Pro tip: Change your brake fluid every 1–2 years, even if it doesn't look dark. Internal degradation isn't always visible, but it directly affects safety.

11/27/2025

Winter vs. Summer Tires: The Science Behind Seasonal Grip 🚗❄️☀️

A skilled technician understands that a tire’s true performance isn’t just about its shape—it lives in the chemistry of its rubber and the engineering of its tread. Temperature changes transform how a tire behaves, which is why choosing the right type is essential for safety and stability.

❄️ Winter Tires: Built for the Cold

Winter tires are crafted to stay alive and flexible in the frigid world below 7°C, where summer rubber turns stiff and unreliable.

Key Engineering Features

Rubber Compound
Formulated to remain elastic in freezing temperatures, ensuring grip on icy and snowy surfaces.

Tread Depth
A legal minimum of 4 mm, designed for better slush evacuation and claw-like traction on compacted snow.

Special Markings
Look for M+S or the Three-Peak Mountain Snowflake symbol—the gold standard for severe winter performance.

☀️ Summer Tires: Precision for Warm Roads

When temperatures climb above 7°C, summer tires take the lead. Their design is optimized for dry and wet warm-weather driving.

Key Engineering Features

Rubber Compound
Soft and grippy in heat, but becomes rigid below 7°C, which dramatically reduces traction.

Tread Depth
A legal minimum of 3 mm, tuned for stable handling.

Tread Pattern
Engineered to push water aside efficiently, reducing the risk of hydroplaning during summer storms.

Why Temperature Matters

A tire’s compound is like a mood—it behaves differently depending on the environment.
Below or above that 7°C threshold, rubber chemistry shifts, and performance goes with it. Using the wrong tire in the wrong season isn’t just inefficient—it can be dangerous.

11/27/2025

On an OBDII connector, pins 6 and 14 correspond to the CAN bus, and their voltage determines whether the vehicle's communication network is operating correctly. Both should remain around 2.5 V at rest.

When transmission is occurring, CAN High rises to approximately 3.5 V, and CAN Low drops to about 1.5 V, generating the potential difference that the ECU interprets as data. If either pin remains at 0 V, 5 V, or shows an abnormal difference, the network is down, there is a short circuit, or a module is locked, as explained in Auto Advance.

Pin 6 – CAN High (CAN H)

Function: Positive line of the CAN bus.

Typical quiescent voltage (ignition ON, engine OFF):
≈ 2.5 V

Voltage during transmission (CAN frames):
≈ 3.5 V in dominant state
≈ 2.5 V in recessive state

Pin 14 – CAN Low (CAN L)

Function: CAN bus negative line.

Typical quiescent voltage (ignition ON, engine OFF):
≈ 2.5 V

Voltage during transmission (CAN frames):
≈ 1.5 V in dominant state
≈ 2.5 V in recessive state

11/27/2025

An internal combustion engine is made up of different essential parts that work together to make the fuel move. Here I show you what each section that has the engine is for
1. Valve Cover
Also known as a “valve cover”, this piece sits on the top of the engine and its primary function is to protect the rockers, shaft and valves. In addition, it prevents oil leakage from the valve train and helps maintain adequate lubrication in this critical engine area.
2. Culata
The back mounts on the engine block and seals the top of the cylinders. It houses fundamental components such as intake and exhaust valves, spark plugs (in petrol engines), injectors and in many cases, the cam shaft. Its design allows the entry of air-fuel mixture and the expulsion of burned gases, thus controlling the combustion cycle.
3. Engine Block
It's the main engine body, where the cylinders, pistons and the crankshaft are. The block supports and accommodates the components that execute the mechanical movement of the engine. Inside it occur the four stages of the combustion cycle: intake, compression, explosion and escape. It also features cooling and lubrication ducts that ensure the efficient and safe operation of the engine.
4. Carter
This piece is located at the bottom of the engine and acts as an oil tank. Its function is to store the necessary lubricant so that all mobile parts of the engine work without excessive friction. It also helps to dissipate oil heat and in some cases, keep internal components isolated from external contaminants.

11/27/2025

Porsche has shocked the automotive world by patenting an 18-cylinder internal combustion engine—a monstrous engineering concept unlike anything seen in modern cars. At a time when most automakers are shifting to electric vehicles, Porsche is proving that mechanical power still has a future.
This engine is rumored to deliver unheard levels of torque and horsepower, making it suitable not just for hypercars, but also aerospace and high-performance racing. The patent drawings show a compact radial layout designed to reduce vibration and perfect fuel-air balance even at extreme RPMs.
Even more surprising—reports suggest Porsche may use synthetic e-fuel, a carbon-neutral alternative to gasoline, meaning this mega-engine could still be environmentally friendly while delivering raw power.
The message is clear: the age of the combustion engine isn’t over—it’s evolving.

11/27/2025

🚗⚙️ You can use any spark plug as long as it fits the engine

Many drivers think that any spark plug will work as long as it screws in without a problem, but this idea is wrong and can cause serious engine damage by using the wrong size.

🔴 MYTH (Any spark plug will work if it fits):
1️⃣ Incorrect dimensions that affect combustion.

2️⃣ Knocking due to internal contact with the piston or combustion chamber.

3️⃣ Risk of overheating and pre-ignition.

🟢 FACT (What actually happens):
1️⃣ Each engine requires a specific size and gap.

2️⃣ Proper gapping prevents internal damage and misfires.

3️⃣ The correct heat range ensures performance and durability.

4️⃣ Using the wrong spark plug alters fuel consumption, power, and performance.

👉 Pro tip:
Always check the exact part number recommended by the manufacturer. The correct spark plug not only fits, but also protects the engine and ensures optimal ignition.

11/27/2025

Driving on empty doesn't affect the fuel pump

Many drivers believe that driving with a nearly empty tank doesn't cause any damage, but this idea is dangerous and can actually shorten the pump's lifespan and introduce sediment into the system.

🔴 MYTH (Driving on empty doesn't cause problems):
1️⃣ People think that as long as the car doesn't stall, everything is fine.

2️⃣ Some believe the pump works the same with low fuel.

3️⃣ It's also assumed that sediment doesn't reach the system.

🟢 REALITY (What actually happens):
1️⃣ The pump needs to be submerged to stay cool.

2️⃣ With low fuel, the temperature rises and the pump wears out faster.

3️⃣ Sediment from the bottom of the tank enters the system and can damage the filter and injectors. 4️⃣ Keeping your fuel tank full prevents overheating and premature failure.

👉 Pro tip: Avoid driving on empty. Always keep at least a quarter of a tank to protect the fuel pump and injection system, and prevent unnecessary and potentially costly damage.

11/26/2025

📌 What Is a Crankshaft? Parts, Working & Common Engine Symptoms:

The crankshaft is a vital engine component that converts the linear motion of pistons into rotational motion to drive the vehicle’s wheels. It is a long, precision-engineered shaft located at the bottom of the engine block, connected to the pistons via connecting rods.

📌 Parts of a Crankshaft:

1. Main Journals – Support the crankshaft within the engine block.

2. Crankpins (Rod Journals) – Connect the crankshaft to the connecting rods.

3. Crank Webs (Crank Arms) – Bridge the crankpins and main journals.

4. Counterweights – Balance the rotating assembly and reduce vibration.

5. Oil Passages – Allow lubrication to flow through the crankshaft.

6. Flywheel Mount – Connects to the flywheel or flexplate at the rear end.

📌 Working of Crankshaft:

During the combustion cycle, the piston moves up and down inside the cylinder. This reciprocating motion is transferred through the connecting rod to the crankshaft. The crankshaft, with its offset crankpins, turns this up-and-down motion into a smooth, rotating motion. This rotation powers the transmission and ultimately the wheels.

📌 Advantages of Crankshaft:

✅ Efficient Power Transfer: Converts piston movement into usable torque.

✅ Smooth Operation: Counterweights reduce engine vibration.

✅ Durability: Made from high-strength forged steel or cast iron for long life.

✅ Essential for Timing: Helps synchronize engine components.

📌 Symptoms of a Faulty Crankshaft:

⚠️ Knocking noises: Due to worn bearings or damage.

⚠️ Oil leaks: Crankshaft seal failure.

⚠️ Engine misfire or stall: If the crankshaft position sensor fails.

⚠️ Low oil pressure: If journals wear down.

⚠️ Vibration: Poor balance or damage to counterweights.

11/26/2025

This image shows an easy way to calculate when it's time to replace your brake pads simply by measuring their thickness. 🚗

11/26/2025

Improperly handled wiring harness: When the wires are punctured with needles or attempts are made to remove the connector by pulling on the wire, the filaments fracture internally, leaving it held together by only one or two wires. Interestingly, the engine may continue running, but the activation signal begins to weaken under vibration and temperature, causing intermittent misfires that mislead diagnostics. Sometimes it throws a P030X code as if the injector were faulty, other times an "open circuit" appears as if it were the ECU. The key is not to replace parts, but to identify whether the fault originates from the injector's internal driver or from the open circuit in the wiring harness.

Tool Tech

11/28/2025

11/28/2025

11/28/2025

11/27/2025

11/27/2025

11/27/2025

11/27/2025

11/27/2025

11/27/2025

11/26/2025

11/26/2025

11/26/2025

Address

Website

Alerts

Contact The Business

Shortcuts

Share

Category