All good 👍

This was my first time using a compression tester. I wanted to check on my old wagoneers compression. I wanted to verify some claims that an engine flush can raise engine compression. So I checked the 4 easiest cylinders. Super easy to find the right size adaptor to fit into the spark plug hole. I was a little worried the hose would unscrew from the adaptor but that didnt happen. It worked perfectly, no leaks. The kit comes in a nice and sturdy hard case. Keeps everything organized and safe. I wont be using a compression tester often but im glad I have it to spot check the bad cylinder that I found. The engine flush did not raise the compression but im seeing if some other chemicals to clean the valves may help.

The 8 pcs Compression Tester Kit is a comprehensive tool designed for measuring engine compression pressure in automotive cars, motorcycles, and small engines. With a pressure range of 0-300 PSI, this kit offers versatility for a variety of engine types and sizes. The set includes multiple components, allowing users to test compression in a range of engine applications. Here's a detailed review based on its features, performance, and value.Features & Specifications:Pressure Range (0-300 PSI): The compression tester is designed to measure compression pressure from 0 to 300 PSI, which covers the typical pressure range for most gasoline engines in cars, motorcycles, and small engines. This broad range ensures compatibility with a wide variety of engines, making it a versatile tool for professional mechanics or DIY enthusiasts.Multiple Adapters: The kit comes with 8 pieces, including a variety of adapters and connectors, allowing you to fit the tester to different engine models and types. This ensures compatibility with multiple engine sizes, making it perfect for both automotive and motorcycle applications.Durable Construction: The compression tester features a robust build that can withstand the rigors of automotive work. The materials are designed to handle the pressures involved in compression testing, ensuring reliable performance even with frequent use.Easy-to-Read Gauge: The tester is equipped with a clear, large dial gauge, making it easy to read the compression pressure values. The gauge is designed with a wide range to allow precise readings across the 0-300 PSI scale. This is helpful for diagnosing engine health and performance.Portable Storage Box: The kit comes in a portable storage box for easy organization and transport. The box is designed to hold all components securely, preventing loss of small parts and allowing for convenient storage when not in use.Universal Application: The tester is designed for use with a wide variety of engines, including cars, motorcycles, and small engines. It's suitable for both professional mechanics and hobbyists looking to test the compression of their engines.Pros:Versatility: The 8 pcs set offers multiple adapters and connectors, making it compatible with a wide range of vehicles and small engines. This versatility makes it an excellent tool for both automotive mechanics and those working with motorcycles or other small engines.Accurate and Reliable Readings: The 0-300 PSI range on the large gauge ensures accurate readings for a variety of engine types. This wide range allows users to assess the health and performance of engines, whether they are in cars, motorcycles, or smaller engines.Durability and Quality Construction: The tester is made with durable materials that can withstand high pressures and regular use, making it a reliable tool for frequent testing. The high-quality construction ensures that the tool lasts over time, even with heavy-duty use.Convenient Storage: The storage box is a great addition to the kit. It keeps the tester and its adapters organized and easily accessible, preventing loss of parts. The box also makes it convenient to store the kit in a toolbox or garage for quick access.Portable and Easy to Use: The compression tester is easy to set up and use, even for beginners. The portable case makes it easy to take the kit to different locations, whether you are working at home or in a professional shop.Ideal for Engine Diagnostics: This kit is especially useful for diagnosing engine health. Low compression readings can indicate problems like worn pistons, rings, or valves, which can help identify issues before they become more severe.Cons:Not Suitable for Diesel Engines: The compression tester is designed for petrol (gasoline) engines, so it may not be suitable for diesel engines or other engine types that require a higher compression range. Diesel engines typically require specialized compression testers with higher PSI ranges.Plastic Parts May Wear Over Time: While the tester itself is made of durable materials, some of the plastic components (such as the adapters or connectors) may wear down or become brittle after repeated use. This is common with many budget-friendly kits, but it’s worth considering if you're looking for a tool that will last for many years of heavy use.Pressure Release Valve: Some users may find the pressure release valve mechanism on the tester to be somewhat stiff or difficult to operate. A smooth and easy release of pressure is important for convenience, especially during multiple tests.Limited Advanced Features: While this kit covers basic engine compression testing needs, it lacks some advanced features found in professional-grade testers, such as more precise or electronic readings. However, for general use and most DIY projects, this kit provides sufficient functionality.Conclusion:The 8 pcs Compression Tester Kit is a versatile and reliable tool for anyone looking to assess engine compression pressure in automotive cars, motorcycles, or small engines. The 0-300 PSI range and variety of adapters make it suitable for a wide range of engines, while the durable construction ensures longevity and consistent performance.The large, easy-to-read gauge and the convenient portable storage box further enhance its usability and convenience, making it a great option for both professionals and DIY enthusiasts. While the kit may not be suitable for diesel engines and has some minor limitations with certain components, it provides excellent value for those who need a reliable compression tester for regular engine diagnostics.If you are looking for a cost-effective, easy-to-use compression tester for petrol-powered engines, the 8 pcs Compression Tester Kit is a solid choice that offers great value for money. It is a perfect addition to any mechanic’s toolbox for engine troubleshooting and routine maintenance.

You might make some expensive decisions about your engine condition based on the results of a compression test so you want to make certain the results are accurate. How can such an inexpensive / cheap tester produce accurate results ? This parts in this kit in general are all pretty fragile. Particularly the hose that you screw into the spark plug hole. You would prefer a stiffer hose when you try to tighten it against the rubber O Ring. If it is not seated firmly it could leak and you would not hear it buried in the spark plug hole. You do not want leaks at any of the connections. Is the gage accurate. When I tried to compare this gage against a known accurate one I struggled to find a way due to the weird / propriety disconnect connectors in this kit. Nothing in the shop would connect to the shape of these unknown connectors. I managed to test the gage accuracy by removing it and installing it as 1 of a 2 gage leak down tester which we knew was dead accurate. Somewhat to our surprise, the gage was dead accurate when compared to the known good one. The pressure release also worked as it should. The adapters included were clean of any machining chips and screwed on nicely. You want to screw them on the hose pretty tight, maybe put a little oil on the threads entering the spark plug hole so when you unscrew the hose you do not leave the adapter in the hole, a common problem. Conclusion : The kit I received is capable of performing an accurate compression test if you are careful of assembling and checking the connections for leaks and can importantly, verify the accuracy of the gage. At this price and the fragility of the components I would not trust it without verifying the gage accuracy. We cannot verify durability but it is initially somewhat suspect. If this is your budget it is certainly worth a try but there are better kits out there. If your compression tests low you probably want to confirm by retesting with another known kit. No need to pull an engine on bad test results.

I would like to start this review making it clear that I'm not a professional mechanic and only work on engines as a hobby, or as a necessity when needed. The extent of compression testers is limited to the ones I've rented at the auto parts store. That being said- this one works just fine. It is clear when you inspect the various parts of this kit that it's not a high end product, but it didn't look terrible. The real test was the test itself. I had recently bought and older car to restore and on my list of things to do was a compression test on the cylinders. I figured in order to give this a fair shot, I'd rent a professional one from the parts store (it's considered a free rental) and put this head to head with it (pun intended). The fittings on this were a bit more finicky to attach and detach then the rental, but they did go together. The test itself registered very similar results to the rental unit so the accuracy was plenty close enough for my purposes. It has several various attachments that I'll probably never use, but overall I'm pleased with it and for the price? Absolutely. For the non pro, this will work just fine for what you need it to do.