If you are on the hunt for a leak down tester, chances are you have a serious engine problem or are trying to isolate one.

Equally likely is the fact that this is one purchase where quality and accuracy are essential elements.

we’ve put together a collection of the best Leak Down Testers that are currently available on the market. To help you find the perfect Leak Down Tester among a wide variety of options, we constantly update our collection with new and trending models.

10 Best Leak Down Testers

Based on dozens of customer reviews and ratings, the followings are the top 10 best-selling Leak Down Testers:

Top Rated Leak Down Tester Reviews

Since we’ve mentioned 10 different models of Leak Down Testers on the above list, it may be difficult for you to find the right one for your needs. This is why we listed the key features of each of these Leak Down Testers below:

1

Product Highlights:

  • OTC’s Cylinder Leakage Tester Kit quickly diagnoses internal engine problems like bad rings, valves, and leaking head gaskets and comes complete with adapters for most applications
  • Dual 2-1/2 inch gauges read 0-100 psi and 0-700 kPa and feature chrome bezels and rugged protective outer boots
  • Kit features a pressure regulated manifold with quick couplers, 24 inch long 14mm flex hose, and 10 mm, 12 mm, and 18 mm thread adapters
  • Rugged, blow molded storage case with removable lid keeps components organized and protected when not in use
  • Includes detailed instruction chart
2

Product Highlights:

  • Cylinder leak down tester,compression test kit -Engine Cylinder Dual Gauge Leakdown Tester kit Diagnostics Tool.
  • 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.
  • 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.
  • PACKAGE CONTENTS: 480mm flexi hose, 12mm and 14mm spark plug adapters, fixed short connector M14 x 26mm, fixed long connector M16 x 26mm, pressure gauge, cylinder leakage gauge, air regulator, instructions, and carrying case.
  • GUARANTEE. We provide our worry-free 24-Hour reply, 30-Day Refund.
Sale3

Product Highlights:

  • 【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
4

Product Highlights:

  • [PRODUCT INCLUDE]: 480mm (18.9’’) hose, 12mm (0.47’’) and 14mm (0.55’’) spark plug adapters, fixed short connector, fixed long connector, Gauge (2-1/2’’): 0-100 psi(0-7bar), air regulator, instruction and a carrying case.
  • [FUNCTION]: The cylinder leak detector kit is designed to easily detect a variety of engine faults, including worn piston rings, worn valves, cracked cylinder walls, and blown head gaskets.
  • [DIAGNOSIS]: The engine compression diagnosis tester kit also can check the amount of leakage and locate leaks area in an engine cylinder to help determine the source.
  • [APPLICATION]: Suitable for working on any petrol engine with 12 or 14mm spark plugs, and ideal for testing trucks & late model cars where clearance is minimal.
  • [PACKAGE]: The cylinder leakage pressure detector test set with a ABS plastic blow-molded case can keep the tools organized, safe storage and easy to transport.
5

Product Highlights:

  • The multi-piece cylinder leak down tester kit adds 6 new partners to offer you more options and a better repair experience. On the basis of a common set(1PC double gauge maniflod, 1PC rubber hose and 2PCS metal adapters included), this 3-in-1 cylinder gauge diagnostic tool kit adds 2PCS universal push-on connectors, 2PCS threaded adapters, 1PC M14 extension rod, and 1PC extension hose. It is a must have for any DIYer or professional mechanic’s tool collection.
  • Convenient dual gauge design allows the compression gauge tool to test the pressure and leak rate of the cylinder under test at the same time. Ranging from 0-100 psi / 0-7 bar and 0-100%(Accuracy: ±0.5%), easy to read 3-inch gauges would spend less time on readings. Leakdown gauge tool hooks up to air compressor(prepare by yourself) can help to detect common engine faults such as worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets.
  • Gauge manifold assembly also equipped with 18″ rubber hose, AR2000 pressure regulating valve, American type air plug and aluminum manifold body. Valve knob is made of alloy and plastic, used for pressure adjustment of the inputed air from the air compressor. Pull out for use, and push back to lock. This leak down compression tester & cylinder leakage test kit fits for most gasoline engines with spark plugs(within 20mm).
  • Constructed with aluminum and rubber, straight / angled type universal push-on connectors don’t need to be threaded into spark plug wells and applicable to almost all petrol engines, and M14 aluminum extension rod can be installed on long / short hose(41-3/4″; 11-1/2″) end to increase distance and facilitate operation. Adapter sizes: M14*1.25, M18*1.5, M10*1, M12*1.25. High quality and deep threads allow the fittings to bite better, antislip and durable.
  • Long & short rubber hoses feature 300 psi W.P and brass adapters at both ends(M14 x 1.25; quick plug)- Ideal for connecting the gauge hose assembly to the cylinder with the selectable fittings. Your satisfaction and recognition are always what we pursue. The product can be returned unconditionally in one month and we also supply 1 year warranty. Welcome to contact us if you have any doubts or you are not satisfied with the product quality in the process of use.
6

Product Highlights:

  • Measures the ability of an engine cylinder to hold compressed air- using shop air pressure- and supplements a compression tester
  • Package Dimensions: 5.842 L x 29.972 H x 20.32 W (centimeters)
  • Package Weight : 1.293 kilograms
  • Country of Origin : United States
7

Product Highlights:

  • ◇ FITS YOUR VEHICLE — It is compatible with gasoline 4-stroke engines and 12mm or 14mm spark. As long your vehicle has a standard spark plug socket, this set will work for you
  • ◇ COMPARE CYLINDERS — It best tests cylinder leak down and compression when comparing a suspect cylinder to a known good cylinder on the same engine
  • ◇ EASY TO USE — Remove the 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
  • ◇ Designed to detect a variety of common engine faults. including: Worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets
  • ◇ Suitable for use on any petrol engine with 12 or 14mm spark plugs. Tester checks the amount of leakage in an engine cylinder & helps determine the source. Ideal for testing trucks & late model cars where clearance is minimal
8

Product Highlights:

  • Designed to detect a variety of common engine faults including: Worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets.
  • Available with either single gauge or twin gauge manifold. Gauge(s) show % of cylinder leakage or cylinder leakage and cylinder pressure.
  • Suitable for use on any petrol engine with 12 and 14mm spark plugs.
  • TU-21 Cylinder Leak Detector Tester checks the amount of leakage in an engine cylinder & helps determine the source. Best used when comparing a suspect cylinder to a known good cylinder on same engine. Ideal for testing trucks & late model cars where clearance is minimal. Equipped with 2-1/2″ input pressure gauge for proper leakage test setup and accurate results.
  • Pinpoint the source of compression problems by doing cylinder leak-down tests Works with domestic and import engines Input and leakage gauges with rubberized housing Air pressure: 0-7 BAR, 0-100 PSI Brass fittings Measures leak percentage from 0-100% 1/8″ NPT manifold ports
Sale9

Product Highlights:

  • FITS YOUR VEHICLE — It is compatible with gasoline 4-stroke engines and 12mm or 14mm spark. As long your vehicle has a standard spark plug socket, this set will work for you.
  • COMPARE CYLINDERS — It best tests cylinder leak down and compression when comparing a suspect cylinder to a known good cylinder on the same engine.
  • 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.
  • Designed to detect a variety of common engine faults. including: Worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets.
  • Suitable for use on any petrol engine with 10, 12 or 14mm spark plugs. Tester checks the amount of leakage in an engine cylinder & helps determine the source. Ideal for testing trucks & late model cars where clearance is minimal.
10

Product Highlights:

  • ENGINE CYLINDER LEAKAGE TEST: JIFETOR cylinder leak gauge set is designed to detect a variety of common engine faults including: worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets. Available with either single gauge shows % of cylinder leakage, or twin gauge manifold show cylinder leakage and cylinder pressure. Suitable for any gasoline engine with 14, 12 or 10mm spark plugs. The % gauge is a precise instrument, please handle it with care
  • 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.
  • DUAL PRESSURE GAUGES ASSEMBLY: There are American style air plug, pressure regulating valve, aluminum manifold body, cylinder pressure gauge, cylinder leakage gauge, 19″ long rubber nylon resin hose with quick coupler on the assembly. The two gauges adopt rubber cover protected 3″ large dial, the pressure gauge with scale range 0-100psi/0-7bar, and the leakage gauge with color coded range marked with HIGH MODERATE LOW SET.
  • 3 ADAPTERS AND OTHER PARTS: There are 3 sizes adapters brass coated aluminum 14mm(fixed on a 10″ long hose), aluminum 12mm and 10mm (both can be connected to 14mm adapter), can help to test the gasoline engine with 10 12 14mm spark plugs. The instruction has detailed introduces about notification, connection method, operation steps, fault diagnosis, please read it carefully first. Customized blow molding case keeps everything in place and protects the gauges during storage.
  • SATISFACTORY CUSTOMER SERVICE: Please unscrew the adapter after the cylinder is cooled to prevent the hose from softening and not driving the adapter to rotate together. 30 days full refund with returned undamaged JIFETOR dual gauges gasoline engine cylinder leakage detector kit. Any quality related problem in 1 year, we will replace the fittings for free or refund. Any question, please feel free to contact us by email or amazon message system, we will reply ASAP in 24 hours.

Video Overview

How to use a Leak Down Tester Tool Cylinder Head Leakage Detector

The Leak Down Tester Tool is a handy tool for any back yard mechanic that will be rebuilding and working on engines. Shop Leak Down Tester Tool …

Final Words

So, these are all of the Best Leak Down Testers available on the market. We hope this collection was helpful to find the right Leak Down Tester for the money. However, we recommend checking out the features, benefits, and problems of each of these Leak Down Testers before taking your decision.