To determine if a defective turbocharger is causing excessive exhaust smoke, perform the following:
- Remove the turbocharger outlet line connected to the crankcase and place the drain line into a suitable container;
- Perform a crankcase pressure test.
- If the engine crankcase pressure is greater than 3 in. H 2 O (0.75 kPa), replace the turbocharger;
- If the engine crankcase pressure is 3 in. H 2 O (0.75 kPa), call the Detroit Diesel Technical Service Group.
Perform the following steps to replace a defective turbocharger:
- Remove defective turbocharger from the engine;
- Tag removed turbocharger for remanufacture.
- Install a new turbocharger to the engine;
- Verify replacement of new turbocharger;
Test Engine with Replaced Turbocharger
Perform the following steps to determine if a replaced turbocharger resolved the excessive exhaust smoke condition:
- Start the engine.
- Run the engine speed to full load.
- Visually inspect the exhaust for excessive smoke.
- If the engine exhaust emission appears normal, no further troubleshooting is required. Shut down the engine.
- If the engine exhaust emission is excessive, shut down the engine. Call Detroit Diesel Technical Service Group.