Vauxhall Zafira: coolant leakage

Mechanics found a coolant leak in the Vauxhall Zafira C Tourer 2015. The solution to the problem is presented by Autodata specialists.

In our workshop there is a Vauxhall Zafira-C Tourer from 2015 with a diesel engine that leaks coolant. Coolant loss occurs over time. We suspect that coolant leakage is caused by damage to the cylinder head gasket. We do not want to carry out repairs because we are not sure if the cylinder head gasket is damaged. We kindly ask for your help.

Answer: Leakage of coolant in your customer’s car is most likely caused by a known fault due to the use of inappropriate adhesive on the radiator pipe stub of the exhaust gas recirculation (EGR) system at the outlet side. Drain the cooling system. Remove the suction line to access the EGR cooler. Remove the EGR cooler outlet pipe (fig. 1.1.). Thoroughly clean the surface around the pipe stub of the EGR system (fig. 1.2.). Apply the sealant, available in the Opel section, to the indicated surface (fig. 1.2.). Install the exhaust pipe of the EGR cooler (fig. 1.1.). Reinstall the suction line. Before refilling the cooling system, allow the sealant to harden for a minimum of 12 hours. Fill the cooling system. Perform a pressure check of the cooling system to ensure that the fault has been eliminated.