As long as it fits your engine, you are good to go! They are pretty standard 🙂īringing us to the next tool that you will need. Most compression testers come with several hoses with a variation of fittings on the ends of them that will fit the most common spark plug threads on almost all manufacturers. Usually, you can find a decent compression tester for under $50 at any of these places.
Or you can always go down to your local auto store, napa, advanced auto, AutoZone, or whatever is in your area. We have a couple of compression testers that you can get from Amazon on our resources page here. You will need a compression tester, and a way to turn the engine over. There are really only two things you will need once you get to this point. This is where you will need a couple of specific tools. The next tool you will need is the correct deep well socket that will get the spark plugs out. You will need your socket sets to remove the coils and expose the spark plugs. You will need a basic set of sockets and a wrench to remove any kind of plastics or covers that protect the ignition coils. What Do You Need To Perform A Compression Test?ĭepending on what brand of engine and what kind of engine you are trying to test. Whether or not the engine is creating the proper amount of compression to run properly. What the compression test tells us, is what kind of shape the mechanics of the engine are in. (Check this out for more information on The Different Sections of an Outboard Engine!) It will turn the gears in the lower unit, which transforms this motion to the propeller. In a car, it will turn the transmission and then, in turn, spin the wheels of the car around.įor us in the boating world. What the power is used for depends on what the engine is placed in. Driving the pistons of other cylinders up and then doing this in a specific sequence to keep all of the pistons going up and down and creating the power of the engine. When the mixture explodes inside of the cylinder, it will push the piston back down.
Compressing a fuel and air mixture to a certain point, and then setting it on fire.
As in any combustion engine, the power of the engine is made when a piston moves upward in a cylinder. It will prove whether the engine has a good powerhead or not. It is the very basic test that can provide the tester with the viability of the engine itself.
Bat compression tester how to#
How to do them and what the results mean for you! What Is A Compression Test?Ī compression test for an outboard is a simple test that can be performed on any combustion engine. Here is everything that you need to know about outboard compression tests. Good results for Four-Strokes should be 180-210 PSI, and Two-Strokes should be around 110-130 PSI. Results vary depending on whether the outboard is a Four-Stroke or a Two-Stroke. What Outboard Compression Test Results Mean. The first thing that most people think of when they hear the words, “compression test,” is expensive.
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