Intervals for the tuning differ from one car to another. Many older non-electronic ignition vehicles can be modified every 10,000 to 12,000 miles or annually, whichever comes first. It is expected that new vehicles with electronic ignition and fuel injection systems will travel from 25,000 miles to as many as 100,000 miles without a big tune-up.
The car is stalling quite a lot. The spark plugs may get fouled or worn, the distance between the electrodes of the spark plug may need to be changed or an electronic measuring unit may need to be changed.
When idling or driving the engine works approximately. Odds are that the car needs a tuning up.
The car gets to move faster. The problem may be in the charging mechanism (such as a weak battery), in the fuel system (such as a weak fuel pump), or in the ignition system, or a defective electronic device such as the electronic control unit ( ECU) may be the trigger.
