--- product_id: 3694103 title: "5609 Cylinder Leakage Tester Kit - Quickly Diagnose Internal Engine Problems like Bad Rings, Valves, and Leaking Head Gaskets" brand: "otc" price: "€ 236.60" currency: EUR in_stock: true reviews_count: 13 category: "Otc" url: https://www.desertcart.gr/products/3694103-5609-cylinder-leakage-tester-kit-quickly-diagnose-internal-engine-problems store_origin: GR region: Greece --- # Dual 2.5-inch precision gauges Multi-size adapters for universal fit Quick diagnosis under 5 mins 5609 Cylinder Leakage Tester Kit - Quickly Diagnose Internal Engine Problems like Bad Rings, Valves, and Leaking Head Gaskets **Brand:** otc **Price:** € 236.60 **Availability:** βœ… In Stock ## Summary > πŸ” Diagnose like a pro, fix like a boss. ## Quick Answers - **What is this?** 5609 Cylinder Leakage Tester Kit - Quickly Diagnose Internal Engine Problems like Bad Rings, Valves, and Leaking Head Gaskets by otc - **How much does it cost?** € 236.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/3694103-5609-cylinder-leakage-tester-kit-quickly-diagnose-internal-engine-problems) ## Best For - otc enthusiasts ## Why This Product - Trusted otc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable & Organized:** Rugged blow-molded case with removable lid keeps your tools protected and ready for action. - β€’ **Pro-Grade Convenience:** Pressure regulated manifold with quick couplers and a flexible 24-inch hose for seamless testing workflow. - β€’ **Universal Compatibility:** Includes 10mm, 12mm, and 18mm adapters to fit most enginesβ€”one kit, endless possibilities. - β€’ **Precision Pressure Gauges:** Dual chrome-bezel gauges calibrated 0-100 PSI & 0-700 kPa for accurate, reliable readings every time. - β€’ **Rapid Engine Health Check:** Pinpoint bad rings, valves, and head gasket leaks fast to keep your engine running smooth. ## Overview The OTC 5609 Cylinder Leakage Tester Kit is a professional-grade diagnostic tool designed to quickly identify internal engine issues such as worn rings, valves, and leaking head gaskets. Featuring dual 2.5-inch chrome-bezel gauges calibrated for PSI and kPa, it includes multiple thread adapters and a pressure-regulated manifold with quick couplers. Packaged in a durable blow-molded case, this kit ensures precision, versatility, and durability for automotive professionals and enthusiasts alike. ## Description The OTC 5609 cylinder leakage tester kit can help you quickly diagnose internal engine problems like bad rings, worn valves, and leaking head gaskets. The tester features easy-to-read dual 2-1/2 inch gauges with chrome bezels and rugged protective outer boots for better grip and drop protection. Calibrated for 0-100 PSI and 0-700 kPa. Ready-to-use kit comes complete with pressure regulated manifold with quick couplers, 24" long 14 mm hose, and 10mm, 12mm, and 18mm thread adapters. Adapters fit most applications. Sturdy blow molded hard case with removable lid keeps contents protected and secure when not in use. Requires 100 psi shop air to pressurize the cylinder(s) under test. Detailed operating instructions included under storage case lid. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether its a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technician productivity and shop profits. Review: A Good product which provides reliable and accurate diagnostic reading results - The OTC Leak-down tester is a well made, functional, and accurate product comparative to similar, and or less expensive units. Speaking from experience, the need for accurate reliable results is well worth the marginal additional price point. Review: Great set - After reading the bad reviews On this leak down set, I was hesitant, but when reading reviews of other sets where most reviews were good, but B still had bad reviews, I decided to Go with OTC. Along with their compression test kit, I trouble shooted a cylinder 2 misfire on a V6. 5 of the 6 cylinders tested good, compression held on the gauges and were consistent and accurate to my air compressor gauges. Helped me diagnosis Bad exhaust valves for my misfire. Overall, very happy with the product quality, accuracy, and price point. I would not hesitate to but this again ## Features - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0030EVL60 | | Best Sellers Rank | #9,133 in Automotive ( See Top 100 in Automotive ) #735 in Motorcycle & Powersports | | Brand Name | OTC | | Customer Reviews | 4.7 4.7 out of 5 stars (2,898) | | Global Trade Identification Number | 00731413418549 | | Included Components | Cylinder Leakage Tester Kit | | Item Dimensions | 9.2 x 10.25 x 4.45 inches | | Item Weight | 1.79 Grams | | Manufacturer | OTC | | Material Type | Rubber | | UPC | 731413418549 | | Unit Count | 1.0 Count | | Warranty Description | LIFETIME | ## Product Details - **Brand:** OTC - **Item Weight:** 1.79 Grams - **Item dimensions L x W x H:** 9.2 x 10.25 x 4.45 inches - **Material:** Rubber - **Thread Type:** Metric ## Images ![5609 Cylinder Leakage Tester Kit - Quickly Diagnose Internal Engine Problems like Bad Rings, Valves, and Leaking Head Gaskets - Image 1](https://m.media-amazon.com/images/I/71YVgOHwsvL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: can you use this as a compression tester?** A: No. With a compression tester, the engine is cranked over with the spark and fuel systems disengaged. The compression stroke is what generates the pressure that is read on the gauge. It's used to see if the cylinder can produce adequate pressure during a stroke or if air is escaping somewhere (like past piston rings, or through non-sealing valves, for example). It will not, however, help you locate a leak.With a leakage tester like this one, compressed air is supplied through the spark plug hole into the cylinder through the use of an air compressor. One meter will read you the amount of air pressure you put in, the other will read you the amount of air that stays in the cylinder. This will show you a percentage of air that is leaking. With a constant supply of air going into the cylinder, you can then look and/or listen for leaks. Sometimes the air is escaping past the rings into the crank case, sometimes past an intake valve or exhaust valve that is not closing for some reason, and in some case the air might be leaking past the head gasket into another cylinder.Different tools, different process. I'd buy both. **Q: What would be a good compressor to use with this?** A: Any compressor that has a tank. And an built 120psi. I would say probably atleast one of the pancake compressors with the 1.5 gallon tank you need the volume from it to sustain the 100 psi in the cylinder. And enough to were if it does lack it doesn't have to turn on to build preasure. But I have a 3 gallon tank and it works great. I have resently put a bigger tank on it becuase of my impact guns. They needed more volume so I hosed in a 15 gallon tank and tied it into my hose. The compressor takes a little longer to fill ip the tanks know but I multiplied the tank size by 5. It is a realy nice tool. I use it all the time. I did let it sit for a while once and you should apply a light coat of oil to the rubber hoses or they will start to get stiff. But that's what rubber does. **Q: audi 4.2l v8 how do you tighten the fitting into the very deep well spark plug hole? Is finger tight by twisting the hose good enough?** A: Just snug the fitting into the cylinder hole by gently twisting the hose if you can't snug the fitting in with a wrench. If needed, put a rag on the hose, to protect it, and tighten just a little bit more with a slip-joint pliers. Over tightening the fitting will just ruin the o-ring. Apply a small amount of silicone lubricant to the o-ring to lube it before use. The o-ring will then make a "wet" seal and won't bind-up as it's being tightened . DO NOT use any petroleum-based lubricant to lube the o-ring because it breaks down rubber over time. I also do all this when using a compression tester. Have fun! **Q: can you use this tool AS IS to presurize a cylinder to change vavle springs on an engine?** A: I believe you can use this tool to hold the valve closed while removing the valve spring if you unlock the valve stem keepers first. I do it all of the time and use 100 PSI of air pressure. The piston has to be at bottom dead center. You can also remove the spark plug, insert a flexible rope (cloth drying rope) in the cylinder when the piston is at the bottom of the stroke, rotate the crankshaft to squeeze together near top dead center to hold the valve up while the valve spring is taken off and put back on. It takes longer this way but you do not need the tool or air pressure. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A Good product which provides reliable and accurate diagnostic reading results *by C***T on February 5, 2026* The OTC Leak-down tester is a well made, functional, and accurate product comparative to similar, and or less expensive units. Speaking from experience, the need for accurate reliable results is well worth the marginal additional price point. ### ⭐⭐⭐⭐⭐ Great set *by A***R on November 30, 2025* After reading the bad reviews On this leak down set, I was hesitant, but when reading reviews of other sets where most reviews were good, but B still had bad reviews, I decided to Go with OTC. Along with their compression test kit, I trouble shooted a cylinder 2 misfire on a V6. 5 of the 6 cylinders tested good, compression held on the gauges and were consistent and accurate to my air compressor gauges. Helped me diagnosis Bad exhaust valves for my misfire. Overall, very happy with the product quality, accuracy, and price point. I would not hesitate to but this again ### ⭐⭐⭐⭐⭐ Buy for life *by A***X on January 18, 2026* I love harbor freight but their leak down tester performs very poorly and inaccurate same with other cheap leak down testers. This one works perfectly and compared to snap-on it is a very good price. Will give you accurate readings and did not have any issues with it leaking. Fit perfectly on my car without using the adapters but still nice to have. ## Frequently Bought Together - OTC 5609 Cylinder Leakage Tester Kit , Black - OTC 5605 Deluxe Compression Tester Kit with Carrying Case for Gasoline Engines - OTC 5613 Vacuum/Pressure Gauge Kit --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/3694103-5609-cylinder-leakage-tester-kit-quickly-diagnose-internal-engine-problems](https://www.desertcart.gr/products/3694103-5609-cylinder-leakage-tester-kit-quickly-diagnose-internal-engine-problems) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-04-23*