What are the reasons for difficult engine starting?
2 Answers
There are two main reasons for difficult engine starting: 1. If the engine starting performance gradually deteriorates, the cause is mostly due to poor battery performance. In this case, the old battery must be removed and replaced with a new one as soon as possible. After replacing the battery, the engine starting performance usually improves immediately. 2. If the engine starting performance has been consistently poor for a long time, it is likely that there is a problem with the ignition system or fuel supply system. For example, faults in the ignition system such as spark plugs, high-voltage wires, or ignition coils, or improper adjustment of the carburetor in the fuel supply system. Solving such problems requires certain technical skills, and it is best to have a professional mechanic inspect the vehicle before the problem worsens.
I've been driving for over a decade, and engine starting issues are quite common. The most frequent culprit is battery aging, especially in cars that are five or six years old—insufficient voltage makes it hard to start, particularly on cold winter mornings. You can use a multimeter to check the battery's charge and see if it needs replacing. Then there's the spark plug issue: if there's too much carbon buildup or the gap is incorrect, the spark weakens, causing rough starts. After I replaced my spark plug last year, the engine started much more smoothly. The fuel system is also crucial—if the fuel filter is clogged or the pump pressure is too low, fuel won't reach the engine. Don’t overlook the intake side: a dirty air filter affects the air-fuel mixture, so check and clean it every few months. Faulty sensors, like the crankshaft position sensor, can prevent the ECU from receiving signals, making ignition difficult. Environmental factors like cold temperatures thicken the engine oil, but switching to a low-temperature oil can help. In short, regular maintenance can prevent these headaches, saving you money and keeping you safe.
