What are the reasons for difficult engine starting?
2 Answers
Engine starting difficulties can be caused by: 1. Overly lean or rich air-fuel mixture; 2. Fuel supply system or intake system malfunction; 3. Spark plug or ignition coil failure; 4. Severe carbon buildup in the engine; 5. Worn or loose engine mount bushings; 6. Insufficient cylinder pressure. Solutions for difficult engine starting include: 1. Adjusting the air-fuel mixture concentration; 2. Inspecting the fuel supply and intake systems for faults; 3. Checking spark plugs or ignition coils for proper operation and replacing if necessary; 4. Cleaning carbon deposits from the engine; 5. Replacing engine mount bushings; 6. Using higher quality fuel.
When my car had difficulty starting, the sound became sluggish like an old ox pulling a broken cart. Later, I found that the most common cause was an aging battery. When the battery power is insufficient, the starter can't turn, especially when the temperature drops. Other common issues include carbon buildup on the spark plugs causing poor ignition or a failing fuel pump not supplying enough fuel. Once during extreme cold, the battery couldn't hold up, but after replacing it, the situation improved significantly. Regularly checking that the cable connections aren't loose can extend its lifespan. Another thing, if sensors like the crankshaft position sensor fail, the system won't receive a signal, and the computer won't know to start. It's recommended not to neglect maintenance, promptly replace the battery and filters to avoid the trouble of breaking down halfway.
