Innova Cylinder Compression Tester Kit - 6-Piece 2.5" Dial, Multi-Adapter, High-Pressure Hose

The Innova 3614 Compression Tester Plus is a six-piece diagnostic kit that measures cylinder compression to pinpoint issues like worn rings, valve problems, or head gasket leaks across domestic and import engines, plus many small engines.

If you need a reliable way to check engine cylinder health, this compact kit gives clear, repeatable readings with a large dial, color-coded scales, and adapters for cars, motorcycles, ATVs, snowmobiles and marine engines. Built with a protected high-pressure hose, a side-release valve for quick cycling, and multiple thread sizes, it’s designed for DIY mechanics and professional techs who want fast, visual compression data without complicated setup.

How does the Innova 3614 reveal common engine problems?

Compression testing records maximum cylinder pressure during cranking so low or uneven readings point to mechanical wear or sealing failures. Comparing readings across cylinders and against manufacturer specs helps narrow down causes like ring wear, leaking valves, or head gasket breaches.

• Provides absolute PSI readings via a 2-1/2-inch dial for easy comparison.
• Color-coded dual scales speed up interpretation between safe and low ranges.
• Repeatable tests using the side-release valve let you re-test without disconnecting.

What vehicles and engines will the kit work on?

The kit covers most gasoline engines in cars and light trucks plus many small engines and powersports machines. Included adapters accommodate common spark plug and small-engine thread sizes so you can test everything from sedans to motorcycles and marine outboards.

• Adapters: 10mm and 12mm for many motorcycles, ATVs, snowmobiles, and marine engines.
• Adapters: 14mm long-reach and standard 14mm plus 18mm for most automotive spark plug holes.
• Hose and fittings rated for high-pressure cranking conditions used across conventional and electronic engines.

How easy is it to use and read results?

The large, 2-1/2-inch dial face with a Bourdon tube movement gives clear needle readings at a glance; scales are dual-calibrated and color-coded to help you interpret results faster. The 15-inch high-pressure rubber hose with stainless steel casing reaches deep spark plug wells and the side-release valve lets you capture and release pressure conveniently for multiple tests.

• Large dial reduces parallax and makes readings readable in low light.
• Side-release valve permits repeated cranking without hose removal.
• Long-reach adapter accesses recessed spark plug locations in many engines.

What should I know about durability and maintenance?

The compression tester uses properly rated fuel-hose materials and brass fittings to resist wear from repeated use, and the stainless steel hose casing protects against abrasion. Routine care is simple: wipe components after use, store adapters together, and avoid exposing the gauge to impacts or corrosive fluids to preserve accuracy.

• Brass fittings and rated hose lengthen service life under shop conditions.
• Stainless casing reduces wear from chaffing or toolboxes.
• Store in a dry location and avoid dropping the dial to maintain calibration.

Who is this for? The Innova 3614 is built for home mechanics, mobile technicians, and service shops that need a compact, multi-adapter compression tester for a broad range of gasoline engines. If you do routine diagnostics on cars, light trucks, motorcycles, ATVs, snowmobiles or marine outboards and want a clear, repeatable pressure readout with adapters for common spark plug sizes, this kit covers those needs without specialty tooling.