Cylinder Leak Down Tester,Compression Test kit -Engine Cylinder Dual Gauge Leakdown Tester kit Diagnostics Tool.

Product Information

Note that some testers, including our Longacre Dual Gauge Leak-Down Tester, actually show the amount of leakage on the second gauge, eliminating the math. A compression tester is a quick and easy way to show if a catastrophic problem exists, and on which cylinder(s). The use of a controlled, regulated compressed air source makes a leak-down test much more consistent and repeatable.

While the leak-down tester pressurizes the cylinder, the mechanic can listen to various parts to determine where any leak may originate.There is no standard regarding the size of the restriction orifice for non-aviation use and that is what leads to differences in readings between leak-down testers generally available from different manufacturers. I really need to make a thread regarding compression testing, much BS and missing steps in comp test DIYs as well.

The exact test pressure tolerated before rotation is highly dependent on connecting rod angle, bore, compression of other cylinders, and friction. Besides leakage noise, indicated percentage of leakage will sometimes vary with regulator pressure and orifice size. Although a compression tester alone won't give you a detailed picture of your engine's health, it can (and should) be used first if there is any reason to believe that a problem might exist. There will be a pressure drop across the orifice and another across any points of leakage in the engine.To use a leak-down tester, you remove the spark plugs as above and rotate the engine until the piston is at top dead center for the cylinder you are testing. For this reason, it's next to impossible to find suggested compression test results for most engines. Re zero the gauge between each test, do multiple tests on each cylinder, get the feel of how this stuff is working.

Each adapter is outfitted with a quick-disconnect fitting and is compatible with a variety of vehicle applications with engines that generate up to 100 psi. It is normally done at TDC (top dead center) on the compression stroke but as you will see it can be done at other crankshaft positions. in this review, you may contact us, but we cannot guarantee a response, even if you send us flowers. The threads for each 14mm hose coupler are well machined and will accommodate additional adapters while still holding pressure. In the United States, FAA specifications [1] state that engines up to 1,000 cu in (16 L) engine displacement require an 0.Each gauge has substantial protection around the housing, and the molded storage case keeps all the components safe and secure. Designed to detect a variety of common engine faults including: worn piston rings, worn valves, cylinder head cracks and blown head gaskets. Generally, a typical automotive engine pressurized to more than 30-40 psi must be locked or it will rotate under test pressure.