Best Compression Tester Under $100 in 2023 - Review & Buying Guide

【Spot on Accurate】This digital compression gauge provides accurate measurements with an impressive 0.5 display resolution, which is within 1% of the exact pressure range of 10-200 PSI. You can rely on consistent and precise readings with no need for guesswork, unlike analog gauges that rely on pointer comparison.

【Versatility】Our product offers versatility with compatibility for 3 different thread sizes, including 2 sizes on the hose and an additional adapter. It's the ideal tool for all types of gasoline engines, including automotive, small engines such as lawn equipment, chainsaws, and four-wheelers, outboard boat motors, motorcycles, dirt bikes, and ATVs.

【Simple and Straightforward】13-inch hose ensure effortlessly reaches deepest spark plugs, quick connect coupler for added convenience, and the side bleeder valve allows for multiple tests without disconnecting the hose. Additionally, the backlit LCD screen displays large, clear numbers in 4 units, making it effortless to read even in dimly lit environments.

【Solid and Durable】Our product is the epitome of durability, built to last with top-notch quality and solid components that offer exceptional value for your money. Our stainless steel covered flex hose, combined with high-quality brass threads, components, and fittings, ensures long-lasting strength that can withstand extended use.

【Packed for Convenient】Our product comes with a carry bag that keeps all accessories secure and organized. It is perfect for carrying around, whether you're in your home garage, at the boat dock, or at a mechanic shop.

OTC's Deluxe Compression Tester Kit offers a complete package for compression testing on gasoline engines and comes complete with standard and specialty adapters

Kit includes the deep well connector used on recessed plug well style heads and the new Ford Triton engine adapter using 16 mm thread plugs

Adapters work on both flat and tapered seat plugs; corrosion resistant nickel plated finish protects metal components

Extra long 25 inch flex hose gauge assembly with quick coupler allows easy viewing out of cluttered engine compartments

Rugged blow molded hard case with removable lid

Manual pressure release for maintaining peak readings.

Professional-grade threaded adapters for leak-proof seals.

Extended hoses for hard-to-reach applications.

Large, easy-to-read 2¾ in. (70 mm) diameter gauge

Adapters fit engines as small as lawn mowers, chain saws and trimmers.

Checking Compression On Petrol Engine Quickly And Accurately

Easy Pressure Release Button On Side Of Tester

Completed Kit Comes With Adapters For Most Applications

Kits Includes 2 Rubber Cones Ends Which Do Not Need To Thread Into Head

3" Gauge Features Dual Color Scale

【Deluxe Design Set】: Complete package for compression testing on gasoline engines, comes with 4 adapters of standard and specialty, and 16-inch flex hose gauge assembly with quick coupler, all firmly stored in the deluxe case.

【Accurate Measurement】: Digital compression gauge has incredible 0.5 display resolution within 1% of the exact pressure ranged from 10-200 PSI.

【Smart Display and Bleeder Valve】: Wide backlit LCD screen displays large, clear numbers in 4 units. Auto off after 2.5 minutes of inactivity to preserve battery life. Side bleeder valve allows repeated tests without disconnecting the hose.

【Professional and Durable】: Built for all-day performance in the shop or garage from the highest quality steel and brass components.

【No Concerns Service】: AZUNO products all enjoy One-year warranty and customer service always online to provide technical support.

【EVAP SMOKE MACHINE】VXSCAN V3 is a professional vacuum machine for car fuel pipe system leak detection. Supports EVAP system test, tightness test, intake system test, exhaust system test and various pipe fittings test. V3 smoke leak detector will help you solve the problem, saving time and money.

【EASY TO USE】By heating USP mineral oil or baby oil, the automotive smoke machine can be outputs lots of smoke within 30 seconds, to improve diagnosis efficiency. This evap smoke machine built-in air pump, you don't need to purchase extra. V3 help you control the smoke effect easily and allowing you to estimate the size of the leak by the change of the gauge value.

【SMOKE FLOW METER & PRESSURE GAUGE】Equipped with pressure gauge and adjustable flow meter which helps you control the smoke effect easily. When the pressure gauge runs to the maximum, the flow meter drops to 0, indicating that your pipeline is not leaking. On the contrary, it means there is smoke leakage.

【Air Mode & Smoke Mode】The V3 smoke leak tester adopts an independent switch control design, the air mode independently controls the built-in air pump, the smoke mode independently controls the smoke generator. With intelligent protection, if the working limit is exceeded, the power will be automatically turned off to ensure the safety of the operator and equipment.

【WIDELY COMPATIBILITY】Our package includes all accessories (Oil not included), it supports detect the leaks of multi pipe systems on cars, motorcycles, snowmobiles, off-road vehicles, ATVs, light trucks and speedboats boats. The fuel pipeline leak diagnostic machine is suitable for all brands and models of cars.

【Complete Kit for Car Testing】: the 9pcs cylinder testing kit comes with 8 x compression tool and 1 x spark plug tester, total package includes 1 x SPARK PLUG TESTER, 1 x 300PSI DUAL UNITS GAUGE, 1 x STRAIGHT RUBBER CONE ADAPTER, 1 x CURVED RUBBER CONE ADAPTER, 4 x BRASS ADAPTERS, and 1 x 14-inch EXTENSION HOSE, complete package allows you to test the car’s condition easily by yourself

【Extra Value with Spark Plug Tester】: the spark tester is a must have diagnostic tool for engine which has a spark plug, you can diagnose ignition or engine outboard motor issues and a fault in the fuel delivery system quickly and easily; If spark is being sent, the tester will mirror the spark and you can see it light up, therefor you can find dirty spark plugs, defective points, bad cables or connections, etc.

【300psi Dual Units Gauge with 3” Dial】: easy to read this compression gauge which comes with 0 - 300 PSI and 0 - 20 kg/ cm square dual units, the gauge cover is protected by an anti-scratch coating and rubber protection to absorb shocks; Plus, all the items are contained in an ABS case for easy storage, the fittings can accommodate most or all of your needs for most engines, good kit overall for your garage

【Easy and Safe to Use】: first, remove the fuel pump and fuel-injection fuses, disconnect the main wire to the coil and spark plug wires, and remove spark plugs; And then start the threaded end of the compression gauge in a spark plug hole by hand; Last, turn the ignition on, depress the throttle, and crank the engine four revolutions to get accurate data

Note: please make sure that all parts are well installed before proceeding to the cylinder pressure test; Do NOT touch any of the spark plug tester or any part of the test units when the ignition is on, switch off the engine and take out the key each time before you touch them; If any other questions on this product, please don't hesitate to contact us, we are always glad to help

ADVANCED COMPRESSION TEST: Includes everything you need for a fast & effective compression pressure testing of petrol, gas, and fuel engine cylinders for most spark plug types on cars, trucks, motorcycles, marines, ATVs, UTVs, snowmobiles, boats, & more

UNIVERSAL COMPATIBILITY: Includes multi-size adapters (straight, curved, & male fittings) for compatibility with a wide range of vehicles. All components are protected in a custom ABS carry case for easy organization and transport.

STURDY & ANTI-RUST: Easy-to-read instrument panel with dual units (0-300 psi, 0-21 kg/cm²). Acrylic glass gauge cover with anti-scratch coating and rubber protective cover for outstanding shock-absorption performance.

ALL-IN-ONE COMPRESSION TESTER KIT: 1x spring buckle gauge, 1x straight rubber cone end adapter, 1x curved rubber cone end adapter, 4x brass adapters with metric male fittings & O-rings: M10, M12, M14, M18; 1x extension hose (14" length)

SATISFACTION GUARANTEED: Look to Orion Motor Tech for the finest craftsmanship and the most reliable engine compression tester kit, rigorously tested and backed with our usual strong warranty and friendly 24/7 customer service, ensuring years of satisfied use!

ADVANCED COMPRESSION TEST: Includes everything you need for a fast & effective compression pressure testing of petrol, gas, and fuel engine cylinders for most spark plug types on cars, trucks, motorcycles, marines, ATVs, UTVs, snowmobiles, boats, & more

UNIVERSAL COMPATIBILITY: Includes multi-size adapters (straight, curved, & male fittings) for compatibility with a wide range of vehicles. All components are protected in a custom ABS carry case for easy organization and transport.

STURDY & ANTI-RUST: Easy-to-read instrument panel with dual units (0-300 psi, 0-21 kg/cm²). Acrylic glass gauge cover with anti-scratch coating and rubber protective cover for outstanding shock-absorption performance.

ALL-IN-ONE COMPRESSION TESTER KIT: 1x spring buckle gauge, 1x straight rubber cone end adapter, 1x curved rubber cone end adapter, 4x brass adapters with metric male fittings & O-rings: M10, M12, M14, M18; 1x extension hose (14" length)

SATISFACTION GUARANTEED: Look to Orion Motor Tech for the finest craftsmanship and the most reliable engine compression tester kit, rigorously tested and backed with our usual strong warranty and friendly 24/7 customer service, ensuring years of satisfied use!

【UNIVERSAL FITMENT】Suits all local and imported cars and trucks, ideal for testing trucks and car models where clearance is minimal. check the amount of leakage in 4-stroke engines.

【FEATURE】Designed to detect a variety of common engine faults such as worn piston rings, cylinder head cracks, worn valves and blown head gaskets. It checks the amount of leakage in an engine cylinder and helps determine the source.

【WORKING PRINCIPLE OF LEAKDOWN DETECTOR】 Once the leakage tester has been connected to one of the cylinders, compressed air (45-100psi) is fed into that particular cylinder through the built in pressure regulator. Diagnosis is made by observing the amount of leakage that is indicated on the cylinder leakage gauge and by listening for leakage at various points of the cars system. Please note: This cylinder leak tester is not suitable for shallow cylinder.

【PROFESSIONAL LEAKAGE DETECT FUNCTION】: This cylinder leak tester checks the amount of leakage in an engine cylinder and helps determine the source. It is designed to detect a variety of common engine faults such as worn piston rings, worn valves, cylinder head cracks and blown head gaskets

【EASY TO USE】Remove the Schrader valve and turn the regulator off before applying shop air. Install the hose to the cylinder, the unit to an air supply, calibrate the leak gauge, and connect the unit to the cylinder hose. Diagnosis is made by observing the amount of leakage indicated on the cylinder leakage gauge and listening for leakage at various points of the car system