Reasons for car engine failure and maintenance
Automobile engine malfunctions have multiple causes and knowledge of common failure types and corresponding maintenance methods can help owners to deal with problems in a timely manner and to ensure road safety. The author, as a car mechanic, explains the signs and importance of engine failure through practical cases。
Classification of common causes of failure
Carbon accumulation: poor-quality fuel leads to carbon accumulations such as gas entry doors, oil jets (e. G., 120,000 km of pasat carbon blocks and 15% oil consumption of 2 mm carbon from car pistons)。
2. Firing system failure: spark plug aging (e. G., fox spark plug gap 1. 2 mm) and fissures of fuse coiling (50,000-60000 km vehicle type is common and requires maintenance to check electrodes colour)。
3. Unstable oil pressure: inadequate oil pump pressure (e. G., bmw 5 oil pump 2. 8bar, filter congestion), high levels of oil-deficit area, recommended 30,000 km to clean tanks。
4. Mechanical component issues: aging of foot mats (e. G., fissures in honda's loft), time system dents (modern puncture belt cracking gas door)。
5. Fuel/air issues: blasts caused by poor-quality fuels (e. G., the great wall of haf), air-filtration core congestion (e. G., only 30 per cent gas intake from mass filter cores)。
6. Lubrication and cooling issues: oil deterioration (e. G., toyota asphalt), thermostat scalding (bek water temperature-high-converted tank cover deformation) and water-deficit areas require attention。
Sensor anomalies: aerobic sensor failure (e. G., mercedes p0172 failure code), water temperature sensor anomaly (20 minutes for the start-up of the calorie cold)。
Corresponding maintenance methodology steps
Carbon sequestration: ultrasound cleaning throttle doors (e. G., normal after mass cleaning), suspension vials to wash oil (avoid breaking seals) and selection of pea additives。
2. Ignition system maintenance: matching spark plug heat values (to avoid blast), oscillator detection coils (e. G., ford wave-shaped anomalies) and depth detection per 40,000 km。
3. Oil pressure checks: pressure gauges for oil pumps (e. G., insufficient audi flow), oscillator checks for pressure fluctuations (e. G., 0. 5 bar instantaneous differences), re-nets for pumps。
4. Mechanical component overhauls: retrofitting plant foot mats (avoiding acoustic noise), special tools for timing (preventing metal impacts), and twirling compactors in accordance with the manual。
Fuel/air optimization: oil selected by compression compared to oil (e. G. 11:1 engine avoided oil no. 92), examination of leachate seals (preventing a decrease in gas intake), endoscope examination of gas vents。
6. Lubrication and cooling maintenance: release of used oils (to avoid new oils becoming dark), hot water thermostats (to prevent miscalculation), specialized washing agent radiators。
Sensor screening: using the original plant/general diagnostic device (avoiding error), thermal wind gun for water temperature sensing (preventing error), matching the oxygen sensor model (preventing increased fuel consumption)。
