Determine The Size Of The Leak

Calibrate the equipment in relation to the definition of a major or minor leak for the relevant vehicle. See the instructions provided by the equipment supplier.

Connect the leak detecting equipment hose for gas  to the detached hose.

Pressurize the fuel tank system. Check the result against the default value to determine the size of the leak.

HINT: The supplier's instructions often contain useful tips to facilitate carrying out checks. 

Complete pressurization.