The crankshaft’s primary purpose is to convert the linear motion of the engine’s pistons into rotational motion, which drives the vehicle’s wheels. It plays a crucial role in synchronizing engine components, ensuring smooth power transfer, and balancing the engine to reduce vibrations. Without the crankshaft, the engine couldn’t operate effectively. The crankshaft is one of … Read more
To turn a crankshaft with a breaker bar, first, locate the crankshaft pulley and attach a suitable socket to the pulley bolt. Then, use the breaker bar to apply steady force, typically turning the crankshaft clockwise. This method allows for precise control during tasks like timing adjustments or engine diagnostics. Turning the crankshaft by hand … Read more
Crankshaft keyway repair without welding involves using methods like filing and applying epoxy, fitting a repair sleeve, or using an oversized key to restore the keyway’s functionality. These techniques are effective for fixing minor to moderate damage, ensuring the key and pulley are securely in place without the need for welding. The crankshaft keyway is … Read more
Relearning a crankshaft sensor without a scanner involves using manual methods like key cycling, throttle relearn, or a driving cycle. These techniques help the engine control module recalibrate to the new sensor position, ensuring accurate engine timing and performance. While it’s a cost-effective approach, following the specific steps carefully is crucial to avoid engine issues. … Read more
Crankshaft bolt torque specs are critical for securing the crankshaft pulley to the crankshaft, ensuring proper engine operation. These specifications vary by vehicle and engine type, typically ranging from 100 to 250 ft-lbs. Adhering to the correct torque specs prevents both under-tightening, which can lead to loosening, and over-tightening, which can cause bolt or engine … Read more
Replace a crankshaft seal when you notice signs of oil leaks near the front or rear of the engine, a burning oil smell, unusual engine noises, or an illuminated oil pressure warning light. It’s also advisable to replace the seal during major engine repairs or if your vehicle has high mileage (over 100,000 miles). Timely … Read more
The cost of replacing a crankshaft oil seal ranges from $300 to $600 for a front seal and $600 to $1,500 for a rear main seal, depending on the vehicle, labor rates, and parts required. The rear seal replacement is typically more expensive due to its location, requiring more labor to access and replace. Regular … Read more
A crankshaft seal leak occurs when the seal around the crankshaft becomes worn or damaged, allowing engine oil to escape. Common symptoms include visible oil leaks under the vehicle, a burning oil smell, and low oil levels. Prompt repair is essential to prevent further engine damage and maintain optimal performance. A crankshaft seal leak is … Read more
If a crankshaft is not turning by hand, it could indicate a serious issue such as a seized engine, hydrolocking, or internal mechanical damage like a broken timing belt or damaged bearings. Diagnosing the problem promptly is crucial to avoid further damage and costly repairs. Professional inspection may be necessary to determine the exact cause. … Read more
To tell if a crankshaft is forged or cast, you can check the parting line, surface texture, and weight. Forged crankshafts have a narrow, sharp parting line, smoother surface, and are generally heavier due to their denser material. In contrast, cast crankshafts have a wider, rounded parting line, a rougher texture, and are lighter. Additionally, … Read more