A broken exhaust system: Question A broken exhaust system: Answers Can allow poisonous fumes to enter the cabin. Does not cause problems. Should not be a concern. Explanation A broken exhaust system can let poisonous fumes into a vehicle's cab or sleeper berth. Be sure to inspect your exhaust system for any loose, broken, or missing parts. This questions appears in the following tests: Hawaii Tank Iowa Passenger Maine Double Michigan Class B Knowledge Test Missouri Class A Knowledge Test Missouri Tank Missouri Tank Montana Class B Knowledge Test Nebraska Double New Hampshire Class A Knowledge Test Tennessee Class A Knowledge Test Tennessee Bus Washington Class B Knowledge Test Washington Class B Knowledge Test
