How often do I need to change spark plugs?

Have a 1993 AuraHow often do I need to change spark plugs?
check your owners manual hope this will help you...How often do I need to change spark plugs?
Think of how the length of time you have have the auto, then ask is it needed by car health.
'93 Aura?

What the heck is that?

Or do you mean '93 Acura? If so, Id need to know the model.




I do it once a year or every 12000 miles.
10 to 20 k miles depending on the plugs you use.
When you start having problems..

Get them checkd with every service- they need adjusting every 5-10k??? if at all?



New plugs maintain peak engine performance and efficiency. Every engine will misfire occasionally. But as the number of misfires per mile goes up over time, it increases exhaust emissions, wastes gas and reduces power. In the past, most motorist would not notice the gradual decline in ignition performance until it reached a point where it created a steady miss, caused the engine to run rough, buck or stall, or made it hard to start. Not so today. All 1996 and newer vehicles have an OBD II onboard diagnostic system that tracks ignition misfires. When the rate of misfires exceeds a certain limit and causes emissions to increase 50% over baseline levels, it illuminates a warning light. Too bad older vehicle do not have this watchdog system. So on older vehicles, replacing the spark plugs at the recommended service intervals for preventive maintenance will reduce the risk of misfires and maintain peak engine performance. For standard spark plugs, the service interval is typically every 45,000 miles. For platinum spark plugs, it is 100,000 miles.
Its a Citroen Aura, I would recommend replacing the spark plugs between 75,000 and 80,000 kilometres or sooner, especially if you are experiencing a significant reduction in fuel economy and power.



Source: Ex-GM Parts Pro, 15+ yrs. exp.
If you're talking about a Saturn Aura why not upgrade from AC Delco Rapidfire Plug which required changing every 25,000 miles to a cross- referenced AC Delco iridium plug which will be the last set of spark-plugs your car will ever see. They're good for 100,000 miles. You've already got a good electronic ignition to fire a wide gap plug.
it's generally every 3.000 km's on each car