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Engine Hard 4-6 hours 7

ISL 8.9 Valve & Jake Brake Adjustment: Specs & Tools

For a 2004 Cummins ISL 8.9, intake valve clearance is 0.006-0.010" and exhaust is 0.018-0.022". Jake brake clearance is 0.022-0.026". Use Cummins tool 3823510 for jake brake adjustment.

Engine Hard Professional diagnosis required 4

ISL 9 Fault Code ID 2000 FM9: Sudden Power Loss Fix

Fault code ID 2000 FM9 on ISL 9 engines typically indicates an ECM communication or sensor issue. The intermittent nature suggests a loose connection or failing sensor that needs professional diagnosis with proper Cummins diagnostic tools.

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