A fuel injection system cleaning is usually recommended in certain intervals, which can be found in your manufacturer’s owner's manual; however, if it is not in your owner's manual that does not mean your vehicle does not require to have its fuel injection system cleaned regularly. As always, at Midas we can look up your manufacturers’ recommend fuel injection cleaning intervals, even if they are not in your owner's manual. Regardless, the common consensus for a fuel injection service is about every 12,000 miles to 15,000 miles.