When a injector pump governor is faulty how does the truck behaves?

When an injector pump governor is faulty, the truck may experience erratic engine performance, such as fluctuating RPMs and inconsistent power delivery. This can lead to difficulty in maintaining speed, stalling, or excessive fuel consumption. Additionally, the engine might produce more smoke due to improper fuel metering, resulting in increased emissions and potential damage over time. Overall, a malfunctioning governor disrupts the engine's ability to operate efficiently.