I did a search regarding the engine ticking noise and saw a few results, but then everyone tends to go off into other tangents unrelated to topic.

My questions regarding the engine ticking noise:

1. is it barely or definitely audible inside the car?

2.if definitely audible, can you hear it even with the windows rolled up?

3. i have a slight ticking and was reading that the injectors do make a light ticking noise and is normal. true or false?