What to Do When the Car Has Difficulty Starting?
2 Answers
Methods to address difficulty in car starting include: 1. Replace the battery if the voltage difference exceeds two volts; 2. Replace the spark plugs; 3. Clean the throttle body; 4. Clean the carbon canister solenoid valve; 5. Replace the fuel filter; 6. Use higher-quality fuel. Methods to check for difficulty in car starting include: 1. Press the horn and judge the battery's charge level based on the horn's sound; 2. Inspect the spark plugs to determine whether the issue lies in the ignition system or the fuel supply system based on the spark intensity; 3. Remove the spark plugs, turn the engine, and determine whether the problem is with the fuel supply system or the ignition timing based on the dryness or wetness and smell of the exhaust gases; 4. Remove the engine cover and check the ignition timing.
As someone who frequently repairs cars, I believe the most common cause of starting difficulties is an aging battery, where insufficient power prevents the starter from turning. Check for loose or corroded battery terminals and wire connections, and use a voltmeter to test the voltage—normal readings should be above 12 volts; if lower, it's time to recharge or replace the battery. Spark plug carbon buildup or ignition coil failure can also cause issues—try replacing the spark plugs. Worn starter gears or internal problems can make starting difficult; listen for a clicking sound without the engine turning, which may indicate this issue. Additionally, a weak fuel pump can lead to slow cold starts. Avoid repeatedly attempting to start the engine to prevent draining the battery and damaging other components—prompt diagnosis at a repair shop is more reliable. Routine maintenance includes regularly checking battery fluid levels and cleaning terminals, avoiding prolonged inactivity, and replacing the battery at least every two years.
