What can continuous application of high manifold pressure at low RPM cause?

The continuous application of high manifold pressure at low RPM can lead to potential engine damage due to a few key factors. High manifold pressure increases the density of the air-fuel mixture being drawn into the combustion chamber, which can generate more power than the engine is designed to handle at lower RPMs.

At low RPMs, the engine may not be able to effectively expel exhaust gases, leading to incomplete combustion and higher cylinder pressures. This situation can result in overheating, pre-ignition, and potentially detonation. Such conditions can stress engine components beyond their design limits, leading to premature wear or even catastrophic failure.

In aviation, it is crucial to operate within the manufacturer's specified parameters for manifold pressure and RPM to ensure engine reliability and longevity.