The Lisle 20250 Compression Tester measures engine compression in the range of 0 to 300 PSI (0 to 2100 kPa), according to the manufacturer's specs. This makes it pretty versatile for checking out different diagnostic needs.

It's designed to work with 14mm and 18mm thread sizes, so it can fit a variety of vehicles, which is nice if you're tackling different kinds of engine work. From what we've gathered, folks find it pretty easy to use, with clear instructions that make it approachable even for those who aren't super experienced.

Our research shows that the Lisle 20250 generally gets a thumbs-up for delivering reliable readings that match up with factory specifications, making it a solid tool for figuring out engine compression issues. But, it's worth noting that sometimes readings can slightly differ when compared with other testers.

As for its build, it's mostly robust and comes with various adapters, which adds to its usefulness. Some have pointed out that the pressure release valve might need a good grip to work, and while parts like the hose and brass fittings seem sturdy, a few have mentioned that the gauge itself might not feel as durable.

Overall, the Lisle 20250 is seen as a dependable performer by both pros and DIY fans who appreciate its adaptability and effectiveness in diagnostics, even if it does have some minor quirks.

The Lisle 20250 Compression Tester is quite popular with both DIY car buffs and professional mechanics, mainly because it's super versatile and easy to use. It can be used with both 14mm and 18mm spark plug holes, which is great for testing compression in different gasoline engines without having to constantly switch setups.

According to the manufacturer's description, it measures from 0 to 300 PSI and 0 to 2100 kPa, covering most standard testing needs for gasoline engines.

From our research, it's clear that the Lisle 20250 is appreciated for its accuracy and reliability. A lot of folks have mentioned that it provides consistent and accurate readings and is pretty straightforward to operate.

Like, one person used it on their 2003 BMW 325i and was really happy with how accurately it worked without any leaks.

On the flip side, while it's generally considered a good value, there are some concerns about its durability over the long haul. A few people mentioned issues with the construction and noted some discrepancies in pressure readings after using it for a while.

This might mean there's some variability in how it's made or issues like calibration drift—which isn't super uncommon with tools like this. It's something to be mindful of if you'll be using it a lot.

In the end, the Lisle 20250 Compression Tester is usually seen as a solid and practical tool, especially for what you pay. But like any tool, keeping up with maintenance and calibration checks can help make sure it's working correctly over time.

While it's a reliable piece of gear overall, just keeping an eye on its condition will help maintain its performance.

From what we've found, the Lisle 20250 Compression Tester is pretty easy to use, even if you're not a mechanic pro. It's meant for checking engine compression efficiently, and quite a few folks have found it straightforward and reliable.

One thing to keep in mind, though, is that the tester doesn't come with a carrying case. The manufacturer's description mentions it includes just the tester. According to our research, some users feel it works well but say it would be nice to have a case for better protection and organization. Someone even suggested buying a case separately, especially if you need to move the tool around or store it often.

So, if having a case is important for you, you might want to consider other testers that come with one. There are options out there that include a case as part of the kit, which helps keep things tidy and protected.

In the end, the Lisle 20250 is known for its solid performance and accuracy, but if a missing case is a dealbreaker for you in terms of easy transport and storage, you might want to weigh your priorities before deciding.