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Your cart is empty.Get an accurate read on your engine parts with the ABN Engine Compression Test Kit. It accurately measures cylinder compression and allows you to diagnose engine conditions such as damaged pistons, burned valves, blown head gaskets, and worn rings. The 18mm adapter has an Internal thread size of 14mm*1.25mm and outside thread size of 18mm*1.5mm to snugly attach to the 14mm hose threading for a universal fit on most plug types. The compression test tool has a dual calibrated scale that is easy to read from 50 PSI to 300 PSI and 3 Bar to 20 Bar (0 kPa to 2100 kPa). The side release valve on the small engine compression tester allows for repeated tests without the hassle of disconnecting the hose, and the flexible rubber hose and long reach adapter offers easy access. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.
ButchD
2025-08-27 16:52:21
Fast shipping from the seller. Item arrived on time. I used this particular item to check the compression on my home push mower.This high quality well made product worked flawlessly. And all of this for a most reasonable price.
Drdrdaddeo
2025-07-12 17:43:32
This inexpensive compression guage has all rhe accuracy and features of a much more expensive guage, including quick disconnect and interchangeable screw thread sizes. Most importantly, it has a scrader valve at the spark plug screw-in end piece, assuring no loss of accuracy. I measured this guage against my old but hight quality guage on the same chainsaw engine and got exactly the same reading (175 psi) on both guages. Interestingly, I only got 105 PSI when I quick connected either this or my higher quality guage to the tubing from a cheaper compression guage kit that did not have the shrader valve on the business end. I was getting very low readings using that defective old kite and threw the guage away, but kept the hose. Turns out there was also a problem with the hose in that cheap kit as it lacked an authentic shrader valve at the screw-in fitting. Make sure any compression guage hose that you use, has a schrader valve on the threaded end, as well as an air pressure release valve at the indicater end. The cheap guages have only a flap valve and those leak air under pressure. The better guages (including this inexpensive one)l have both an authentic, replacible schrader valve, and a release valve. I saw a utube video describing this and didn’t believe it. But trust me....it makes all the difference in the world.
Jason K.
2025-06-08 19:23:11
I used this twice and it worked fine, third time it broke and won't allow me to thread into the spark plug hole because the tube separated from the threads. I would not recommend this
PQB
2025-05-29 13:14:26
I compared the Guage with another Compression gauge and I am satisfied with the Results.
Wizard Man
2025-05-04 15:03:07
Not used yet but great value if it works.
Snb
2025-03-30 14:44:53
But it would be better if the check valve worked. Reached out to the manufacturer but no reply.EDIT:checked it out further and discovered that the pressure release button is adjustable and was set too deep so it was bleeding down. It now functions properly.
ole
2025-03-24 15:04:40
1. It works as described. Unscrew the spark plug and screw this in.2. The 14mm adapter is threaded so it fits into the 18 mm. Just unscrew the 18 off to use the 14mm.3. It is very well made and the pressure reading stays until you push the release button.
georgedelnorte
2024-12-30 16:01:13
Great tester for the price - excellent quality and accurate. Would buy again
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