Signals that your car needs a tune-up can happen at any time, but you may not be aware of what they are. If your engine is misfiring or your car is showing a decrease in fuel economy, these are signs that something is going on with your car and that you should get it checked out soon. These are a few of the signs to look out for to determine if your car needs a tune-up.
- An old oxygen sensor can trigger your check engine light and decrease your car's fuel economy. Engine performance might also suffer due to worn piston rings or by restrictions in the exhaust system.
- The check engine light is on. This could signal a problem with the emissions control system and may affect fuel economy or engine performance.
- Your engine misfires. This is when spark plugs ignite at the wrong time and is caused by worn or fouled spark plugs. You may notice your car driving more sluggishly and hard starting.