Leakdown tester homemade engine cylinder troubleshooting tool
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There is also a tool called a "differential cylinder pressure tester" (AKA leakdown tester), that operates on the same principles, but it regulates the pressure entering the cylinder, and monitors the pressure that remains, the balance being the amount of "leakdown". A GOOD healthy motor will leak less than 3~5%, more than about 10~15% is in need of repair, but as was stated above, you can listen to ''where'' it's leaking, so you know whether to go after head gaskets, valves or valve adjustment, or rings. This is a Car Craft article about using a leak down tester: http://www.carcraft.com/techarticles/116_0406_cylinder_leakdown_tester/index.html | There is also a tool called a "differential cylinder pressure tester" (AKA leakdown tester), that operates on the same principles, but it regulates the pressure entering the cylinder, and monitors the pressure that remains, the balance being the amount of "leakdown". A GOOD healthy motor will leak less than 3~5%, more than about 10~15% is in need of repair, but as was stated above, you can listen to ''where'' it's leaking, so you know whether to go after head gaskets, valves or valve adjustment, or rings. This is a Car Craft article about using a leak down tester: http://www.carcraft.com/techarticles/116_0406_cylinder_leakdown_tester/index.html | ||
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