Which emission control system forces unburned or partially burned fuel back into the cylinder in order to be burned?

🎲 Try a Random Question  |  Total Questions in Quiz: 56  |  🧠 Study this quiz with Flashcards
This question is part of a full practice quiz:
ASVAB Auto & Shop Practice Questions — practice the complete quiz, review flashcards, or try a random question.


1. Which emission control system forces unburned or partially burned fuel back into the cylinder in order to be burned?