The compression tester inserts into the spark plug hole for each of the cylinders to be tested. Unplug the coil wire from the.
Monthly Engine Maintenance Engineering Marine Diesel
Diesel leak down tester. This cylinder leak down tester gauges leak down tests more accurately than standard compression tests. The performance tool w89729 leak down test kit can quickly diagnose internal engine problems such as bad rings valves and leaking head gaskets. An engine leakdown test is a compression test in reverse. Check compression on most domestic and foreign diesel engines this compression tester reads pressure from 0 1000 psi. In the leak down test you move the up to tdc because of cylinder choke then work the prop back and forth to seat the rings. Pressurized air is supplied to each cylinder and in moments displays a rate of leakage measure from 0 to 100.
A cylinder leak down test requires the removal of all the spark plugs. Like a compression test a leak down test is accomplished by replacing a spark plug with the tester hose. Leak down is the percentage of compression that is lost by the engine and every engine has some. But can give you a more accurate and detailed picture of the engines overall health. Test the engine at operating temperature for the best results. A cylinder leak down test takes more time to perform.
The dual 2 12 gauges read 0 100 psi and 0 700 kpa and feature chrome bezels and rugged protective outer boots. One gauge on the tester measures the pressure of the air entering the cylinder and the other measures the percentage of the air escaping or leaking from the cylinder. Featuring a quick connect adapter gauge and a thumb button air release this compression tester comes with adapters for gm ford lincoln isuzu mercedes benz kubota toyota volkswagen peugeot. Leak down tests on diesels in aircraft the leak down test is used because you dont want to stand next to a spinning prop doing a compression test. Product description otcs 5609 cylinder leakage tester kit quickly diagnoses internal engine problems like bad rings valves and leaking head gaskets and comes complete with adapters for most applications. Compressed air 80 to 90 psi is then fed into the cylinder.
Instead of measuring the engines ability to create pressure compressed air is introduced into the cylinder through the spark plug hole. Unlike a compression test a leak down tester has two gauges and requires a compressed air source. 10 millimeters and 14 millimeters thread adapters dual 2 12 inch chrome bezel gauges and rugged protective outer shell pressure regulated manifold with quick couplers and all comes with an easy to open blow molded hard case for storage. A threaded coupling is screwed into a spark plug hole.
Gallery of Diesel Leak Down Tester
