About This Built-in Air Pump: The automotive smoke machine features a built-in air pump, eliminating the need for an external air source and simplifying operation for quick and easy use. Pressure Gauge Included: The smoke leak detector is equipped with a pressure gauge that allows you to monitor pressure changes. If the gauge shows no movement, it indicates a leak; if the pressure rises, it suggests no significant leaks or minor leaks. Pressure Range: This vacuum leak smoke machine operates within a fixed pressure range of 19-23 PSI, providing precise testing for various automotive applications (No pressure adjustment.) Simple Operation: To activate the smoke machine for cars, simply pour 10-15ml of baby oil, generating dense smoke that effectively helps in detecting leaks Versatile Testing Applications: Ideal for comprehensive diagnostics, the smoke machine evap leak tester can be used to test EVAP systems, vacuum leaks, low-pressure turbo leaks, intake manifolds, cooling/exhaust systems, and more. Overview Brand : pakowin Style : Blue-Read Pressure Gauge Color : Blue Item Weight : 4.32 Pounds Material : Metal Number of Items : 1 Manufacturer : pakowin