Reasons for the Ticking Sound in Mistra's Engine
2 Answers
Reasons for the ticking sound in Mistra's engine include: 1. Issues with the engine oil, such as insufficient oil or impurities in the oil, which require timely replacement; 2. Wear of the valve tappet, causing excessive clearance between the piston and cylinder wall, low oil pressure, or poor lubrication of the cylinder wall, which can also lead to the ticking sound. It is recommended to visit a 4S shop for replacement. The Mistra is a 4-door, 5-seater sedan with overall dimensions of 4710mm in length, 1820mm in width, and 1470mm in height, and a wheelbase of 2770mm. It features a MacPherson independent front suspension and a multi-link independent rear suspension. The engine options include 1.6t and 1.8t models.
I've been driving the Mistra for three years and encountered the engine rattling issue last winter. At first, I thought it was due to the cold weather, but the sound gradually became louder. After inspection at the repair shop, it turned out to be a chain issue. The mechanic mentioned that the Mistra's chain design is somewhat long, and after driving 70,000-80,000 kilometers, it's prone to stretching, especially during cold starts when it becomes loose and rattles. Additionally, the valve lifters might wear out or lack oil. If the engine oil isn't changed on time or if oil with insufficient viscosity is used, the lifters won't get enough oil, leading to dry friction and noise. Another minor issue could be the carbon canister solenoid valve, which normally produces a slight rattling sound, but if the noise is particularly loud, the valve body might be damaged. It's advisable to check for trouble codes early. Replacing the entire chain assembly might cost around a thousand yuan, and delaying repairs could risk valve damage.
