How to Identify the Authenticity of a Replaced Engine?
2 Answers
Replace the engine at an authorized location, then verify the engine's manufacturing information based on its serial number. Check if the screws on the engine have integrated washers; if not, it's not the original. Inspect whether the color of the engine block and the engine casing matches; if they don't, it's not original. Listen for any unusual noises; if there are rattling or gear sounds, the engine is likely aged and not original. For larger vehicles, throttle up to a certain point and observe if the RPM increases smoothly.
I've witnessed numerous engine replacements, and identifying authenticity starts with the details. Step one is checking the engine serial number—it must match the original factory records linked to the vehicle's VIN. Don't just glance at surface labels; meticulously inspect for signs of tampering or wear. Start the car and listen: genuine parts run smoothly without abnormal vibrations or noises. Test acceleration performance and use an OBD scanner to confirm no error codes exist. Visually, new components shouldn't show oil stains or aged marks, and packaging should be intact with original certification labels. Always request a stamped replacement certificate from authorized repair shops. Safety is paramount—counterfeit parts could cause accidents with far greater losses. Spending extra for peace of mind is wise. Though the process demands effort, it's worthwhile.
