For Volkswagen Golf IV engines with 16-, 18-and 24-valve motors (5-and 6-cylinder engines, which are equipped with modifications for the American market), the GRM lap-belt is extremely dangerous, as it results in damage to the valves. The cost of repair of the gas distribution system in this case varies from 30,000 to 40,000 rubles.
To avoid a cliff, it is recommended that the belt be replaced every 70,000 kilometres of mileage. In addition to the GRM-belts and rollers, the manufacturer also recommends that the water pump be switched on by the GRM belt.
For the 8 valve engines, the impact of the belt edge is not as catastrophic as it is, but it is also highly undesirable.
