This provision is a "subjective immission" control with a curfew. If the activity is done in a residential zone, the Domestic Tools provision can be applied for the repairs, but this provision also is used for the testing phase of any repairs. Los Angeles, CA (Section 114.01) covers this violation in three ways. The first is application of the "noise disturbance" provision in residential districts between the hours of 8 pm to 8 am. The second is being "plainly audible" at a distance of 150 feet or more in residential districts between the hours of 8 pm to 8 am. The third is exceeding the presumed ambient by 5 dB. Hammond, IN (Section 6.2.7) prohibits this activity as a "noise disturbance" at any time.