Innova Compression Tester Plus 6-Piece Kit — 2½" Dial, Hose & Multi-Adapter Set for Cars, Motorcycles, ATVs

The Innova 3614 Compression Tester Plus is a six-piece kit that measures cylinder compression to help pinpoint piston, ring, valve, or head-gasket problems on cars, light trucks, motorcycles, ATVs and marine engines.

Built for home mechanics and professional techs alike, this compression tester pairs a large, easy-to-read 2½-inch dial with durable hose and multiple adapters so you can test most domestic and import engines, as well as small-displacement powerplants. The gauge uses a reliable Bourdon tube meter movement with dual-calibrated, color-coded scales, and the kit includes a side-release valve to speed repeated tests without disconnecting the hose.

How does the Innova 3614 help me diagnose engine problems?

The gauge quantifies cylinder pressure so you can compare readings between cylinders and against manufacturer specs. Low or uneven compression points at specific cylinders direct you toward worn rings, damaged pistons, leaking valves, or a failing head gasket.

• Measures peak compression using a 2½-inch analog dial for quick visual comparison
• Color-coded scales help spot out-of-spec readings at a glance
• Side-release valve preserves pressure during repeated tests to streamline diagnosis
• Works on conventional and electronic ignition systems, plus small engines

What adapters and hose features are included for compatibility?

The kit includes a 15-inch high-pressure rubber hose with a stainless steel casing and brass fittings for durability. Adapters cover common spark plug sizes and small-engine threads so you can test cars, motorcycles, ATVs, snowmobiles, and many marine engines without buying extra parts.

• 15-inch high-pressure hose with stainless-steel braid for abrasion resistance
• 14mm long-reach adapter for recessed spark plugs and hard-to-reach chambers
• 14mm and 18mm adapters for most automotive spark plugs
• 10mm and 12mm adapters to fit many motorcycles, ATVs, and marine engines

How easy is it to read and use the gauge during tests?

The large dial face and dual-calibrated scales let you read results quickly in psi or kPa. The Bourdon tube meter movement provides smooth, repeatable needle action and the color-coded ranges simplify pass/fail assessment under shop lighting or outdoors.

• 2½-inch face improves visibility in work bays and garages
• Dual-calibrated markings give psi and metric values without conversion
• Durable construction resists routine shop wear and tear
• Side-release valve allows controlled pressure release between measurements

What limitations should I expect when using this tester?

This tool measures static cranking compression and does not substitute for dynamic cylinder leak-down testing or other advanced diagnostics. Results show relative condition and help direct further investigation, such as leak-down testing or inspection if compression is abnormal.

• Provides peak compression only, not leak-down percentage or valve timing data
• Requires correct test procedure (disable ignition, throttle open, proper cranking) for valid readings
• Adapters cover most small engines and passenger vehicles but check thread sizes before use

Who is this for: The Innova 3614 Compression Tester Plus is aimed at DIY enthusiasts, independent mechanics, and fleet technicians who need a reliable, portable gauge to verify cylinder health across cars, light trucks, motorcycles and small marine or recreational engines. If you perform routine engine troubleshooting and want a durable, easy-to-read tester with wide adapter coverage, this kit provides practical value without specialist equipment.