What are the reasons for insufficient power in a Nissan Sunny automatic transmission?

1 Answers
KingstonLynn
07/30/25 10:33am
Reasons for insufficient power in an automatic transmission car: Fuel supply system reasons: Due to the blockage of the fuel tank vent hole, partial blockage of the fuel tank switch, fuel filter, and the fuel line between the fuel tank and the carburetor, the required fuel supply cannot be met, resulting in a lean mixture and weak engine performance. Ignition system reasons: Incorrect ignition timing or premature ignition causing early combustion and detonation of the combustible mixture. Due to faults in the ignition system, the spark plug may misfire or produce a weak spark. Cylinder compression pressure: Severe wear of the piston, piston rings, and cylinder increases the clearance between them, reducing sealing performance, leading to cylinder head leakage and decreased cylinder compression pressure. Engine overheating: Incomplete combustion of the combustible mixture due to various reasons results in excessive carbon deposits in the combustion chamber, poor heat dissipation, and increased engine load, causing overheating.
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