The crankshaft is then turned so that each piston is at top dead centre. How to do a cylinder leak down test on an e46 bmw duration.
Details About Otc 5609 Cylinder Leakage Tester Kit Compression Leak Down Test Internal Engine
How to do a cylinder leak down test. An engine leakdown test is a compression test in reverse. How to perform a leak down test. Once the piston is at tdc of the compression stroke air pressure is introduced through a cylinder leak down gauge. Remove the spark plug and place the problem cylinder at tdc top dead center of the compression stroke. Remove the spark plug on that cylinder only. Youll need a leak down tester industrial grade air compressor one large enough to run air tools a ratchet extension.
Honda civic diagnosis part ii cylinder leak down test duration. Locate top dead center. Compressed air 80 to 90 psi is then fed into the cylinder. Hook up the tester. Always make sure to test cylinder leakage with the piston at the top of the cylinder. Instead of measuring the engines ability to create pressure compressed air is introduced into the cylinder through the spark plug hole.
A cylinder leak down test requires the removal of all the spark plugs. This is where the greatest cylinder wear occurs. The right hand dial will give a reading as a percentage. Like a compression test a leak down test is accomplished by replacing a spark plug with the tester hose. A threaded coupling is screwed into a spark plug hole. Once the compressor hose is connected turn the regulator clockwise to allow the air to flow into the cylinder.
Unlike a compression test a leak down tester has two gauges and requires a compressed air source. Read and interpret the test results. When the leak down test tool is attached to the cylinder the next task is to attach the tool itself to the air compressor. One of the gauges on the tester shows the pressure at which the cylinder is being pressurized. The resistance from the other spark plugs helps resist this downward movement. Be careful when introducing air pressure into the cylinder the piston can suddenly travel downward.
It does little good to measure leakage with the piston at.
Gallery of How To Do A Cylinder Leak Down Test
