Fiada 9-Piece Compression Tester Kit & Spark Plug Tester — Red, 0–300 PSI Dial, ABS Case

This compact diagnostic set gives hobbyists and mechanics the tools to check combustion chamber pressure and verify spark quickly without specialized shop equipment. The kit pairs a 3-inch, dual-unit gauge (PSI and kg/cm²) with a visible spark probe and a selection of adapters—straight, curved rubber cones, brass fittings and an extension hose—so it works on cars, bikes, ATVs, snowmobiles and marine engines. All components store in a protective ABS case to keep gauges and fittings organized and protected from knocks.

How do I use the compression gauge to get accurate readings?

Prepare the engine by disabling fuel delivery and ignition, removing spark plugs, and cranking the engine the same number of revolutions for each cylinder. Screw the appropriate adapter into the spark plug hole by hand until it seats, then crank the engine and read the gauge when the needle stabilizes.

• Disable fuel pump and ignition systems before testing
• Fit the correct adapter (straight, curved, or brass) for the spark plug hole
• Crank engine four revolutions at wide-open throttle for consistent readings
• Read the 0–300 PSI gauge; compare cylinders to spot leaks or wear

What does the spark plug tester reveal and how is it safe to use?

The spark tester lets you visually confirm whether ignition voltage is reaching the plug under load conditions. By reproducing the spark in a controlled gap, you can identify fouled plugs, bad leads, or ignition coil issues without relying on guesswork.

• Connect the spark probe inline with the spark plug to watch for consistent sparks
• Use the insulated handle and keep hands clear when the engine is energized
• Switch off the engine and remove the key before handling connectors
• Works on most engines that use traditional spark plugs

What adapters and protections come with the kit for versatile garages?

The set includes rubber cone adapters (straight and curved), four threaded brass fittings for different plug sizes, a spring-button gauge fitting, and a 14-inch extension hose to reach recessed plugs. The gauge face has an anti-scratch cover and a rubber bumper to protect it from impacts while the ABS carrying case keeps everything organized.

• Straight and curved rubber cone ends for angled plug wells
• Four brass threaded adapters to match varied spark plug threads
• 14-inch extension hose for deep or awkward spark plug locations
• Rubber-protected, anti-scratch 3" dial for durable, readable readings

Who is this for? Fiada's 9-piece compression and spark tester kit is ideal for DIY mechanics, professional technicians in small shops, and motorsport enthusiasts who need portable, dependable diagnostics. It suits anyone servicing cars, motorcycles, ATVs, snowmobiles, boats or other gasoline engines that use spark plugs and benefits users who prefer a physical gauge and visible spark verification over purely electronic readers. Follow safe testing procedures and the included adapter options to inspect ignition and compression across a wide range of engines.