The Leak Detection Tool supports field diagnostics by producing visible vapor to locate hard to identify leaks in engine and cab systems. The unit introduces smoke into the intake and exhaust, and pressure areas to help observe leak paths clearly. Adjustable bladder sizes allow testing across a wide range of engine capacities during service work. The same process supports cab leak checks by pressurizing the operator area through the air conditioning system. A handheld wand allows targeted inspection around seals, joints, and openings. Integrated inspection lighting improves vapor visibility and supports accurate identification of leak locations during diagnostic procedures.Attributes:• Identifies exhaust system leaks during diagnostic testing.• Supports leak detection during field service inspections.• Allows testing across multiple engine sizes using adaptable bladders.Applications: The Leak Detection Tool is positioned at the engine and cab areas, where controlled smoke reveals intake, exhaust boost, and cab air leaks during safe routine diagnostic field inspections.