During carbon burn, what engine load should be maintained?

During carbon burn, what engine load should be maintained?

• A. 80% load
• B. 60% load
• C. 100% load
• D. 40% load

Answer: (A)

To burn off carbon deposits, you need sufficiently high engine heat to oxidize and remove the buildup. Operating at a high load, but not at maximum, provides the temperatures and combustion conditions needed to scour carbon while keeping stresses within safe limits. If the load is too low, temperatures won’t rise enough for effective carbon removal. On the other hand, pushing to maximum load can overheat the engine and increase wear or risk damage. So, maintain a high load—in the upper-mid range—to maximize carbon burn effectiveness without crossing safe operating boundaries.

To burn off carbon deposits, you need sufficiently high engine heat to oxidize and remove the buildup. Operating at a high load, but not at maximum, provides the temperatures and combustion conditions needed to scour carbon while keeping stresses within safe limits. If the load is too low, temperatures won’t rise enough for effective carbon removal. On the other hand, pushing to maximum load can overheat the engine and increase wear or risk damage. So, maintain a high load—in the upper-mid range—to maximize carbon burn effectiveness without crossing safe operating boundaries.