Why Does the Teana Frequently Experience Misfiring?

1 Answers
MatteoMarie
07/30/25 9:13am
1. Fault Diagnosis: Common symptoms include: abnormal engine operation or insufficient power, uneven engine performance at high, medium, and low speeds accompanied by rhythmic shaking, black smoke from the exhaust, and backfiring. Engine misfiring can lead to increased fuel consumption, black smoke emission, lack of power, reduced horsepower, inability to accelerate, severe shaking, and increased driving noise. Moreover, it poses significant risks to driving safety. Particularly on uphill starts, the engine load increases in misfiring vehicles, resulting in more noticeable body shaking and a higher likelihood of sudden stalling. 2. The operation of an engine with misfiring can cause substantial harm: 1. Decrease in engine speed and power. 2. Increased fuel consumption and emission pollution. 3. Accelerated wear of moving parts, shortening the service life of lubricating oil. 3. Repair Methods: First, check for electrical circuit faults, then inspect the valve sealing (cylinder compression ratio). If no issues are found in the above checks, it may indicate mechanical aging or damage, requiring a major overhaul.
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