This is a short video of 2 1.5 liter Turbo Civic Sedan engines running. There is the normal sewing machine-like sound of the valves in both, but the first engine has another louder thumpa thumpa sort of sound. I'm not sure what that is and I don't think it is good. The sound does not get worse with increased throttle.
Honda quality has taken a bit of a shi*. Both these cars have ~25K miles. Both have needed the AC condensers replaced, have fuel dilution in the oil, and have valve cover gasket leaks.
I know this is a pinball forum, but I also know I'll get a response and some of you folks know cars. I appreciate any feedback.