Definition of discourse marker noun from the Oxford Advanced Learner's Dictionary
When an engine starts knocking, one of the first things a mechanic will check is the oil pressure. A warning light may come on in the car, and adding sufficient oil will solve the problem. Sometimes, a knocking noise is caused by loose torque converter bolts or a loose flywheel.
According to Repairpal.com, symptoms of a bad knock sensor include poor acceleration, knocking noises during acceleration, poor fuel mileage and a visible check engine light. The symptoms of a bad... According to Repairpal.com, symptoms of a bad knock sensor include poor acceleration, knocking noises during acceleration, poor fuel mileage and a visible check engine light.