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This illustration show you how to use Detroit Diesel Diagnostic Link diagnostic software to do relative cylinder test for GHG17 engine.
The relative compression test runs during engine cranking. DiagnosticLink prevents the engine from starting while it uses engine speed to calculate the test results. The best cylinder will show a result of 100%. A difference of more than 15% suggests there is a compression issue. If there are any cylinders showing less than 85%, perform a manual compression test to confirm the presence of any compression issues.
Note:The relative compression test can only be performed once per ignition cycle.
Note : After performing the relative compression test the ignition must be cycled off and then on before the engine can be started.
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Check as follows:
1 Connect to DiagnosticLink .
2 Turn the ignition ON, (key ON, engine OFF).
3 Click on the
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