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New Edge Cobras
Oil in coolant ?!! 99 cobra
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<blockquote data-quote="1MeanNonPI2v" data-source="post: 12126222" data-attributes="member: 138025"><p><strong>Leak Down Test</strong></p><p></p><p>If the block test is inconclusive, you should leak down test each cylinder. A leak down tester may cost you between $100-200 but it is the best tool for discovering a damaged cylinder. You connect the leak down tester to an air compressor and fill the cylinder to be tested with compressed air. Once the cylinder is pressurized you watch the gauge and look for a drop in pressure. Most cylinders will leak between 10 and 15 percent. Anything more than that is abnormal and would then require a partial or complete tear down. A failed head gasket, piston rings, bad valve seat, damaged valve or a damaged piston/cylinder wall can all cause excessive leakage. </p><p>The block test is the most affordable route to test for a blown head gasket, but I much prefer a leak down test over a compression test. The data gathered from a leak down will give you a much better idea of the condition of each cylinder.</p></blockquote><p></p>
[QUOTE="1MeanNonPI2v, post: 12126222, member: 138025"] [b]Leak Down Test[/b] If the block test is inconclusive, you should leak down test each cylinder. A leak down tester may cost you between $100-200 but it is the best tool for discovering a damaged cylinder. You connect the leak down tester to an air compressor and fill the cylinder to be tested with compressed air. Once the cylinder is pressurized you watch the gauge and look for a drop in pressure. Most cylinders will leak between 10 and 15 percent. Anything more than that is abnormal and would then require a partial or complete tear down. A failed head gasket, piston rings, bad valve seat, damaged valve or a damaged piston/cylinder wall can all cause excessive leakage. The block test is the most affordable route to test for a blown head gasket, but I much prefer a leak down test over a compression test. The data gathered from a leak down will give you a much better idea of the condition of each cylinder. [/QUOTE]
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Oil in coolant ?!! 99 cobra
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