Remove schrader valve from compression tester hose and insert into plug hole. Refer to your service manualfor this procedure.

Leakdown Test Kit
Leak down test motorcycle. A leak down test involves pressurizing the cylinders while the engine is a top dead center tdc. How to perform a motorcycle leak down test bring engine to top dead center tdc. Designed to check the amount of cylinder leakage in a 4 stroke engine with an air source of 70 to150 psi this system will pressurize the cylinder with 60 psi of air gauge will register the. Leak down tests can also be used for motorcycles that feature decompression mechanisms 2 strokes. Leak down testing is simply measuring the rate of air leakage past the rings and valves of an engine. Set the engine at top dead center and attach the leak down tester hose to the sparkplug hole.
Remove schrader valve from compression tester hose and insert into plug hole. It is also important to note this type of tester is not rated to measure more than 100 psi. Aircraft mechanics have used this test for a long time. Lock the crankshaft in place. How to perform a motorcycle leak down test. The drill is this.
Jifetor cylinder leak down tester kit professional dual pressure gauges engine compression leakdown detector leakage test set for gasoline engine with 10 12 14mm spark plugs on car truck motorcycle 50 out of 5 stars 1. Regulate leak down. The abn cylinder leak detector around 31 comes with 12mm and 14mm fittings and must be calibrated before each use by manipulating the schrader valve for the regulator. Hook up leak down tester to 40psi shop air supply. The less air leakage the better. Put motorcycle in high gear and have a helper apply rear brake.
In this position all the valves will be closed and the only places where pressure can escape is through. Pit posse pp2723 leak down tester motorcycle tool. Make sure this fits by entering your model number. Bring engine to top dead center tdc. Refer to your service manual for this procedure.