To determine if incorrect camshaft timing is causing lack of power, perform the following steps:
Check the camshaft timing; if the dial indicator reading is within 0.262 – 0.284 in. (6.655 – 7.214 mm), no further troubleshooting is required. If the dial indicator reading is not within 0.262 – 0.284 in. (6.655 – 7.214 mm), check engine timing; refer to section 12.11.1.
The above camshaft timing settings apply to all 14L DDEC VI engine models.
Engine Timing Resolution
Perform the following steps to resolve incorrect engine timing:
1. Perform an engine gear train timing check; refer to appropriate service manual, engine chapter.
2. Verify engine timing resolution; refer to section 184.108.40.206.
Test Engine with Correct Timing
Perform the following steps to determine if corrected engine timing resolved lack of power
1.2.Start and run the engine.
Test drive the vehicle to ensure lack of power has been resolved.
[a] If no lack of power occurred during the test drive, no further troubleshooting is
required. Shut down the engine.
[b] If lack of power occurred during the test drive, shut down the engine. Call the Detroit
Diesel Customer Support Center (313-592-5800).