Question 1
A transit bus diesel engine cranks normally but will not start, and there is no smoke from the exhaust during cranking. Which condition is the most likely cause?
Correct Answer:
No fuel delivery to the injectors
Question 2
Technician A says low engine power on a transit bus can be caused by a restricted air filter. Technician B says it can be caused by a plugged diesel particulate filter (DPF). Who is correct?
Correct Answer:
Both A and B
Question 3
During a manual cylinder cutout (cylinder contribution) test on a Cummins ISL, one cylinder produces no change in engine rpm when its injector is disabled. This indicates that the cylinder is:
Correct Answer:
Already not contributing power
Question 4
A transit bus diesel produces continuous black smoke under acceleration. Which of these is the most likely cause?
Correct Answer:
Insufficient air for the amount of fuel injected
Question 5
Blue-gray smoke from a transit bus diesel exhaust, especially at startup and during deceleration, most likely indicates:
Correct Answer:
Engine oil entering the combustion chamber
Question 1
Exam overview

About this Exam

Prepare with the ASE H2 Diesel Engines (Transit Bus) Practice Questions - ASE H2 - Diesel Engines (Transit Bus) Certification Exam practice quiz. This question bank includes 100 questions covering transit, diesel, cause, technician, and cylinder. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

More details

Additional Information

ASE H2 Diesel Engines (Transit Bus) Practice Questions - ASE H2 - Diesel Engines (Transit Bus) Certification Exam

This practice set contains 100 questions from the matching question bank and focuses on transit, diesel, cause, technician, and cylinder. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

Quiz information

Frequently Asked Questions

The complete question count is available after full access is unlocked.
No fixed duration is currently configured for this quiz.
Question explanations are included where they are available in the quiz content, helping you review the reasoning after answering.
Yes. You can retake the practice test again as you continue studying during your available access period.
After your access is confirmed, you can continue into the complete practice exam from this quiz flow.
Unless explicitly stated otherwise, this page provides independent practice material for study and exam preparation and is not the official examination itself.
Keep studying

Related Questions