It would typically be evident
during steady engine speeds, or especially
noticeable under the load of
acceleration, which is not what you described.
These symptoms will be of the sort that relate to your vehicle having to struggle to get the fuel that it needs, and will include such things as hard starting, rough running and idling, hesitation, particularly
during an attempt at a hard or sharp
acceleration, such as when trying to pass another vehicle, and a sense of reduced power, especially
noticeable when going up a hill or
during some other type of demanding activity.