AutoLine Pro EVAP Smoke Machine Accessories Kit — Universal Fuel Cap Adapter, 8-Plug Set & Bladder Adapter for Fast Leak Detection

AutoLine Pro’s accessory kit gives smoke machine users a complete set of adapters and plugs to seal fuel fillers, service ports, intakes and exhausts for fast, reliable EVAP leak detection.

This kit assembles five premium EVAP smoke machine accessories into one compact package so professional technicians and DIY mechanics can run diagnostics without improvising seals. Included are a universal gas cap adapter, an 8-piece plugs set, an EVAP service port adapter with valve tool thread, a multi-size bladder adapter and a heavy-duty cone adapter. Each piece is designed for repeatable connection and compatibility with a range of smoke machines and vehicle openings.

How does the universal gas cap adapter speed up fuel-filler testing?

The universal gas cap adapter bypasses the vehicle’s fuel flap and locks onto most filler necks, creating a secure passage for smoke into the EVAP system. That eliminates fiddly temporary seals and reduces test setup time so you can confirm leaks quickly.

• Fits most fuel filler neck diameters for broad vehicle coverage.
• Simple locking interface for stable, pressure-tight connection.
• Durable construction tolerates repeated shop use.

What openings do the 8-piece plugs kit and cone adapter cover?

The 8-piece plugs give multiple diameters to seal a wide variety of hoses and ports encountered during diagnostics, while the cone adapter bridges gaps between 1" and 3.34" openings for intake and exhaust checks. Together they let you isolate sections or cap access points without modifying vehicle components.

• Plugs kit includes assorted sizes to match common EVAP, intake and exhaust ports.
• Cone adapter provides a tapered fit for irregular or sloped openings.
• Both parts are made from resilient rubber to maintain a tight seal under smoke pressure.

When should you use the EVAP service port adapter and valve-thread tool?

Attach the service port adapter when you need to introduce smoke directly at the vehicle’s EVAP service port for focused leak detection. The adapter threads onto the port and accepts the included valve tool interface, making smoke injection controlled and repeatable.

• Threaded connection matches standard EVAP service ports for secure mounting.
• Valve tool thread allows removal or installation of service port cores without extra tools.
• Enables targeted testing of canisters, purge lines and charcoal canister systems.

What makes the bladder adapter versatile for tanks, intakes and water tests?

The bladder adapter functions three ways: as an inflatable plug, a smoke diffuser and an expandable seal, fitting openings from about 1.5" to 5.5". Its adjustable design conforms to unusual geometries and helps direct smoke where you need it without multiple separate fittings.

• Expandable bladder spans a broad range of diameters for flexible use.
• Acts as a diffuser to spread smoke into large chambers like fuel tanks or airboxes.
• Rugged materials resist puncture and maintain airtight pressure for diagnostics.

Who is this for? Automotive technicians, fleet maintenance crews and competent DIYers who perform EVAP and intake/exhaust leak testing will find this AutoLine Pro kit invaluable. It removes guesswork from sealing various ports and openings, reduces setup time during smoke testing, and pairs with most commercial and hobby smoke machines to deliver consistent, shop-ready diagnostics.