Mityvac MV5530 Engine Compression Test Kit, Manual Pressure Release, 2-3/4 in. Bourdon Tube Gauge, Quick-Disconnect Coupler, Includes Threaded Adapters for Motorcycles, Marine and Small Engines

Used it on checking the integrity of the cylinders on a 2017 Kia Forte and it performed flawlessly. Easy to use and didn't break the bank. Liked the big numbers on the gauge and I really liked that it came with extra seals and valve core stems. I'm really starting to like MityVac products. I own this kit and the Brake Bleeder (Metal Housing) and they both performed exceptionally well.

First I like the case. It closes securely for transport. Second is the options of hoses for better reach. The dial is large and well protected. Delivery was quick

I needed a compression gauge with fittings for many different types of engines. This kit is nice. Was disappointed gauge itself was not made in the US as this is the most important part.

I would have preferred that the hoses were extensions instead of having fixed attached plug hole adapters. This would have made it possible to adjust the length making the unit more flexible. That said, good set. I only checked one cylinder so actual accuracy is unknown but better than my old (15 years +) KD Tools which read 125lbs on all cylinders. Cold Block Test of 350 #1 Cylinder with 111,000+ miles: 3 test results were Consistent -155lbs 155lbs 155lbs and held pressure.

Product has everything you need for newer dirtbikes. I'm sure it would also work for older dirtbikes.

I needed an accurate compression tester because my bike had low compression and I wanted to make sure it was not the tester.

Well made Compression testing kit. TOTALLY worth the cost. The case actually has HINGES! Buy it if you want accurate readings for both dry and wet Compression testing. Highly recommend.

Works great...used on vintage snowmobile 100psi different from cheap competitors.

This is by far the best compression tester I have ever used, two thumbs 👍 up mityvac, great product .

Habe auch schon 3 Kompressionstester umd das ist der erste der mich nicht belügt.

This is my 4th different compression tester that I buy... Finally something that actually works!!! Silverline air leaks everywhere. Sealey cheap one, inaccurate reading. The hose does expands due to pressure... Sealey deluxe 100 pounds and the same problem... This one the way it is build I can compare to a snap-on one. You have several varieties of sizes and it even comes with a service kit. For the price, quality and accuracy I doubt you are going to find a better one. The picture with the reading is on a bike with a cold engine. Just wanted to test the compression quickly.

Found the kit to be very well made, from the blow moulded case down to the spark plug adapters, and it was a nice thing to find consumable spares such as o rings in the kit.The rubber hoses are good quality and suitable for what they need to do. flexible but not too flexible and will take a adapter out of a deep cylinder head without collapsing.The airline fittings felt nice and had a positive engagement with no leaks.The guage had a nice smooth action, and most importantly was consistent. I dont care if its inaccurate by a small percentage, but i want it to be consistent, and it was.From memory i think it comes with spare schrader valves for the guage to which is a bonus.All round a well made and at the price, a very good value tool. I have used several different brands prior, both name brands from leading auto shops like from bursons to cheap eBay chinese offerings, and i wont ever bother to use anything else in future if i need to replace it. Im now snooping around for vacuum tester as i know i will get quality. Thanks

This is a high quality kit. The fit and finish is excellent, and most important it's accurate. Compared it to another tester and both readings were spot on. Also a nice touch is the spare parts. Case is sturdy and does what it's supposed to do. Everything is held in place securely. I'm very satisfied with this purchase and would highly recommend it.