What is the reason why the Nissan Qashqai suddenly fails to start but has power?

[Rita]

The reasons why the Nissan Qashqai suddenly fails to start but has power are as follows: The engine starts by the battery current pushing the spark plug to ignite. There may be two main reasons causing the engine to suddenly fail to start. First, it is very likely due to battery rust or leakage. Second, it could be caused by the engine spark plug getting damp on rainy days. Maintenance methods: Check the battery fluid level every one to two months to ensure it is sufficient. If the fluid level is between the upper and lower two marked lines, it is considered appropriate. Also, check the fluid level difference in each cell. If the fluid level is insufficient, unscrew the cap on the battery and add distilled water to replenish the fluid level. Additionally, inspect the battery terminals and use a wire brush to remove any accumulated dirt. If the terminal clamps are severely dirty, use sandpaper to scrape off the dirt along the inner wall. If the spark plug is damp, remove it and use a lighter to dry it to quickly evaporate the moisture on it.