Tune-up intervals vary from one vehicle to a different. Most older vehicles with non-electronic ignitions should be tuned every 10,000 to 12,000 miles or each year, whichever comes first. Newer cars with electronic ignition and fuel injection system systems are scheduled to travel from 25,000 miles to as many as 100,000 miles while not having a significant tune-up.

The car stalls plenty. The spark plugs could also be fouled or worn, the gap between the sparking plug electrodes may have adjusting, or an electronic sensing device may have to be adjusted.

The engine is running roughly when idling or once you accelerate. likelihood is the vehicle needs a tune-up.

The car gets harder to start out. the matter may be within the starting system (for example, a weak battery), within the equipment (for example, a weak fuel pump), or within the mechanism, or will be thanks to a faulty electronic component, like the electronic control unit (ECU).

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