Two problems related to engine knocking noise have been reported for the 1999 Honda Civic. The most recently reported issues are listed below.
While driving could hear a knocking noise on engine, especially when warming up. Consumer had taken vehicle to dealer, but no improvements of problem. The engine knock goes away in about 5 minutes after start up. The consumer feels that the engine was defective.
Engine is making a loud knocking sound. Took to dealer to dealer 10 times, cannot remedy situation.