Best Automotive Smoke Machines for Vacuum and Intake Leaks Ranked

A low-cost digital-gauge machine for occasional DIY use. Its run-time limit makes it a poor fit for a busy shop.

A gauge-and-flow-meter machine for vacuum and intake leaks. The listing gives no warranty.

A gauge-and-flow-meter machine with a longer warranty than most imports. It costs more than similar models.

A budget machine with a gauge and flow meter for vacuum and intake leaks.

A budget gauge-and-flow-meter machine for vacuum and intake leaks. EVAP testing needs a separate regulator.

The Shop Series with its own air motor, for owners without a compressor. It suits vacuum and intake leaks; the maker does not list an EVAP-safe pressure.

A simple smoke generator for a garage that already has compressed air. Without built-in air or a gauge, it is the bare-bones way to smoke-test.

A mid-price gauge-equipped machine for vacuum and intake leaks. Solary does not publish its output pressure, so check it before testing an EVAP system.

A well-equipped mid-price machine with a gauge, flow meter and a big plug kit. Ancel does not publish its output pressure.

A cordless smoke machine for mobile techs and anyone tired of battery clamps. The flow meter and lifetime warranty help justify the price.

A cheap higher-pressure machine for intake and vacuum leaks. Its output is too high for EVAP testing without a regulator.

A digital-gauge machine for shops that want to show customers a pressure reading. No pressure range or warranty is published.

A gauge-equipped machine for intake, turbo and exhaust leaks. Skip it if EVAP codes are the main job.