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Your cart is empty.The INNOVA Compression Tester Plus is a diagnostic tool which can help you identify damaged pistons, worn rings, burnt valves, and blown head gaskets. It works on conventional, electronic, and computerized domestic and import vehicles. It features a large 2-1/2-inch dial face with accurate Bourdon tube meter movement and dual-calibrated and color-coded scales. Includes a 15-inch high-pressure rubber hose with stainless steel casing, side-release valve, 14mm long reach adapter, 14mm and 18mm adapters that fit most vehicles. Also includes 10mm and 12mm adapters which can be used for most motorcycles, ATV's, snowmobiles and marine applications.
Ben Siemers
Reviewed in Canada on January 15, 2025
Build quality and material is poor. Also the adapters have a fairly large void within them which will take up some of the air space and affect overall compression readings as that void is before the Schrader valve inside. You could overcome this I guess by filling that with liquid steel and then drilling out a small calibrated hole. I would suggest looking for a more higher end brand. It is okay in a pinch as a budget tool.
Kbird
Reviewed in Canada on August 30, 2024
for both myself and a friend I gifted this 6 pce set to while it was on sale here on AMZN for the same price as the 4 pce kit (3612)I have not tried it on Truck etc at this point, but there are 4 Adapters including a long reach one.KB.
D. Hoffman
Reviewed in the United States on July 31, 2024
I purchased this specifically for the Jeep 4.0. None of the adapters fit into the spark plug holes. I can still check compression with the rubber piece, but since I’m typically working by myself, that is inconvenient. Other than that, it seems pretty good, I like different adapters and quick connect for the gauge.
Ken Dwiggns
Reviewed in the United States on February 14, 2024
I like that it came with multiple fittings for different size spark plugs. I also like that the hose is detachable from the pressure gauge. That makes it easy to screw hose into the plug opening. I have no way to confirm its accuracy, but all cylinders tested within normal limits. The accessory with the black rubber cone/plug at the end was useless because I couldn't hold it in place tight enough to make a seal.
Dosalt
Reviewed in Canada on December 26, 2024
I don't use these much but they work well when necessary cause I don't have time for games
K. Quaintance
Reviewed in the United States on May 6, 2023
I just don't know... every time i buy a pressure gauge it's always reading low pressure. And then i buy this one and it's reading twice the pressure so i was excited at first - but then the dealership said did the same pressure test and came up much less then what i got. Its a crap shoot..
Matthew Stoltzfus
Reviewed in the United States on November 7, 2023
It worked great showed me what I needed to know.
Cindy Schmidt
Reviewed in Canada on September 2, 2022
Excellent product and reasonable price!
-=Rudy=-
Reviewed in the United States on February 21, 2017
I have no other gauge to test this against, but on my test run this afternoon, the compression numbers I came up with were pretty much right where they were expected to be. Except for one cylinder, which is about 65% of the others. I had looked into renting a similar meter locally, but it was poorly reviewed due to being very inaccurate.I did have to dock it one star. I probably would have rated this 3½ starts if I could have. First of all, the instructions for using the solid extension were too vague--it only has a rubber tip and no threads, so are we supposed to just hold it in place in the spark plug hole? I was able to use the threaded attachment on the hose for the spark plug holes, but I had trouble keeping the adapter screwed on. I ended up doing the compression check without the adapter, since the 14mm threads fit perfectly.What really failed me, though, was the gauge itself. For some reason, the needle was past the post at the "0" mark, and the pointer half of the needle was slightly inclined. I was able to knock the front face off of the meter (it is steel, and pressed on snugly) with a plastic scraper. After lifting the needle back to the right side of the post, I straightened the pointer and reattached the front face, and it has been working for me. Aside from that hiccup, everything is well built and sturdy.
CJ
Reviewed in Canada on December 6, 2017
Well priced. Great quality and delivered quickly. It worked really well in my garden tractors and motorcycle. Great addition to my tool box.
Kate M
Reviewed in the United States on September 26, 2016
I used this compression tester on my car a few days ago. I have no experience with doing a compression test but it seemed simple enough so I watched a few videos and went at it. This tester was easy to set up and get hooked into my car. The gauge is easy to read and the hose feels OK. It has a pressure release valve on it so that made it easy quickly switching from cylinder to cylinder. Making sure it was in tight was a bit awkward though. You have the twist the tube but the braided outer part moves without the inner tube moving. You will need someone else or a camera to be able to read the pressure at first crank or if it isn’t holding pressure. It wasn’t long enough to put against the wind screen to read while sitting in the car.Overview: It is a basic compression tester that works.Pros:Easy to read gaugeEasy to useExtra fittingsPressure release valve for easy and safe disconnect.Cons:Short. Unless you are doing this with a buddy you will need a camera to be able to ready the pressure at first crank.It feels like the steel braid might break early on but I don’t expect the tube that holds the pressure to break.Conclusion: Money well spent on a solid piece of equipment. I was able to get a rough engine health check with this and will hopefully allow me to diagnose any future issues.
SnowHound
Reviewed in the United States on February 6, 2012
Comes in a cheap tear up your hands opening it" plastic wrap. I wish it came with a nice case to store it in. Otherwise, works great and I like the solid braided extension...looks like it will last for as long as I will ever need one. I am using it to test the compression on my snowmobile...works slick and has reads that were consistent with my friend's tester. Good tool to have around for any of your two stroke small motors.
John
Reviewed in the United States on December 3, 2010
I was overhauling my Honda ST1100 motorcycle which has 100,000 miles on it and I wanted to check the compression.I originally purchased another Equus compression tester, but I did not realize I needed a special adapter so that it would work with my 10mm spark plugs - so I had to send that one back to buy this one.I looked at buying the adapter separately, but this 6 piece kit was a better value for the money. In my case, I used the 10mm adapter which screws onto one end of the braided rubber hose. The other end attaches to the gauge and then the adapter is threaded into the spark plug hole. The tester worked well and I feel it was well worth the money to verify the compression in all four cylinders was consistent with each other and within specs. Well worth the money paid for piece of mindFor those of you using NGK spark plugs, the first letter of the spark plug is the thread diameter:A=18mm B=14mm C=10mm D=12mm J=12mmSo in the case of my NGK CR8EH-9, these have 10 mm threads
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