Smoke Testing

Smoke testing should be used to identify a leak only when instructed by Retailer/Authorized Repairer Technical Support. Refer to the manufacturer's instructions for information regarding using the smoke test equipment. Smoke may be introduced into the fuel system through the purge hose, the fuel filler neck or the DMTL filter housing. When introducing smoke through the DMTL filter housing, use the Jaguar Land Rover approved diagnostic equipment to perform routine - (0x407F) Fuel System Leak Check (DMTL) - to make sure that the DMTL changeover valve is energised and the DMTL pump is running.