Three problems related to engine knocking noise have been reported for the 2003 Mazda Protege. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mazda Protege based on all problems reported for the 2003 Protege.
Car stalled at red light, there was a loud knocking sound coming from the engine. After stalling t more times the car ran for another 3 minutes to ge me home for the evening. I then to it to my local Mazda service center.
There's a knocking sound coming from the engine when started in the morning.
When the vehicle was started a knocking noise was heard. The vehicle was taken to the dealer and was unable to determine the problem.