Tp-22 what test can be performed to detect a leak after fueling a gasoline-powered boat?

Sniff Test

a simple sniff test will often tell you whether there is a leak after fueling. To carry out a sniff test, you need to put your hand briefly over the exhaust and sniff it (your hand, not the exhaust). If there is a leakage, you will immediately smell it and determine that there is a leakage.