The problem with the Hyundai Tucson slack of belts with petrol engine 2.0 is often encountered over time or several days after the replacement of the belt. The reason is that the belts are stretched, their tension is dropping. The whistling is particularly audibly heard at warm-up engine speed. In most cases, it is necessary to tighten the belt of the generator, although sometimes it is the culprith of the GRM.
