What is the spark plug gap?
2 Answers
The spark plug gap ranges between 0.6mm and 3mm. Here is relevant information about spark plug oil leakage: 1. Consequences: Spark plug oil leakage can cause various abnormalities in the vehicle, such as increased fuel consumption (iridium spark plugs save over 10% fuel), loss of acceleration power, and engine vibration. Spark plug oil leakage is usually caused by issues with piston rings, valve stem seals, or fuel injectors. Regardless of the cause, the spark plugs should be replaced. 2. Causes: Spark plug oil leakage may result from damaged fuel injectors, valve cover gasket leakage allowing oil to reach the spark plugs, or problems with piston rings and valve stem seals. The specific cause should be diagnosed at a professional repair shop. Spark plug oil leakage can lead to increased vehicle fuel consumption (extreme combustion iridium spark plugs save over 10% fuel), poor acceleration, and failed emissions tests. It is recommended that owners regularly inspect and replace spark plugs as needed. 3. Spark plug principle: The spark plug is a crucial component of a gasoline engine's ignition system. It introduces high voltage into the combustion chamber and causes it to jump the electrode gap to create a spark, thereby igniting the combustible mixture in the cylinder. It mainly consists of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell, with the side electrode welded to the shell.
The spark plug gap is crucial, I've been driving for half my life and know it's vital. Generally recommended between 0.7 to 0.9mm, but it varies by car – Japanese cars tend to have smaller gaps, while German models may go up to 1.0mm, always check the owner's manual. I always remind people not to overlook it – too small a gap means the spark can't jump far enough, causing rough idling; too large and it won't ignite properly, making that annoying clicking sound during startup. If adjusting it yourself, use a feeler gauge and gently tap the electrode without excessive force, or you'll shorten the plug's lifespan. Regular checks improve fuel efficiency and power – when my car starts shaking, I know it's time. For peace of mind, I leave routine maintenance to professional shops.
