Free ASE T2 - Diesel Engines Exam Questions and Answers
ASE T2 - Diesel Engines is part of ASE certification tests from the National Institute for Automotive Service Excellence (ASE). ASE tests certify a technician in one specific repair speciality, are taken at Prometric centres or online with a proctor, and stay valid for five years.
The first 10 questions on this page are free to read, answers included — no account and no card. A plan opens the rest of the bank, the full timed practice test and your weak-topic reporting.
Last updated: August 29, 2026
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Question #1
A diesel engine is vibrating excessively. What is the first thing you should check?
Please select an optionIncorrectCorrect answer: D
Check engine mounts for wear or damage as they can cause excessive vibrations if they are not functioning properly.
Was this answer correct?Question #2
During a diesel engine diagnosis, you discover low fuel pressure. What could be a cause?
Please select an optionIncorrectCorrect answer: B
A clogged fuel filter can restrict fuel flow, causing low fuel pressure issues in diesel engines.
Was this answer correct?Question #3
An engine starts but won't run. What is the most likely issue?
Please select an optionIncorrectCorrect answer: A
Defective glow plugs can prevent a diesel engine from heating up enough to start and run properly.
Was this answer correct?Question #4
If a diesel engine produces a black exhaust smoke, what does it suggest?
Please select an optionIncorrectCorrect answer: C
Black exhaust smoke typically indicates that the engine is burning too much fuel, often due to air restrictions.
Was this answer correct?Question #5
What tool would be best for measuring diesel fuel injector pressure?
Please select an optionIncorrectCorrect answer: A
A pressure gauge is specifically designed to measure fluid pressure, including fuel injector pressure in diesel engines.
Was this answer correct?Question #6
If a diesel engine is overheating, which component should you inspect first?
Please select an optionIncorrectCorrect answer: A
Start by inspecting the radiator, as overheating can often be traced to coolant flow issues originating there.
Was this answer correct?Question #7
What property of diesel fuel allows for better energy output?
Please select an optionIncorrectCorrect answer: B
A high cetane rating in diesel fuel contributes to improved combustion efficiency and energy output.
Was this answer correct?Question #8
When performing a leak down test on a diesel engine, what is being evaluated?
Please select an optionIncorrectCorrect answer: B
A leak down test primarily evaluates the sealing ability of piston rings and valves by measuring airflow loss.
Was this answer correct?Question #9
What is the role of an intercooler in a turbocharged diesel engine?
Please select an optionIncorrectCorrect answer: C
An intercooler lowers the intake air temperature, improving combustion efficiency in a turbocharged diesel engine.
Was this answer correct?Question #10
When is it advisable to perform a diesel compression test?
Please select an optionIncorrectCorrect answer: D
It is advisable to perform a compression test during routine maintenance to assess engine health and performance.
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FAQ
Learn More: https://apse.org/
- Q1: What is the ASE T2 - Diesel Engines exam?
- A: ASE T2 - Diesel Engines is a APSE certification exam. Judging by the questions in our bank, it concentrates on diesel, engine, fuel, injector and intake.
- Q2: What topics does the ASE T2 - Diesel Engines exam cover?
- A: Questions in our ASE T2 - Diesel Engines bank cluster around diesel, engine, fuel, injector, intake, technician, smoke and engines. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for ASE T2 - Diesel Engines?
- A: Work through the ASE T2 - Diesel Engines practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real ASE T2 - Diesel Engines exam questions?
- A: They are drawn from officially released past questions and from community members who have sat ASE T2 - Diesel Engines. Answers are verified and updated weekly.
- Q5: Where do I register for the ASE T2 - Diesel Engines exam?
- A: Register through APSE directly at https://apse.org/. Exampractice is not affiliated with APSE and does not administer the exam.
- Q6: Is there a free ASE T2 - Diesel Engines sample?
- A: Yes. Every ASE T2 - Diesel Engines page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
- Q7: What are APSE Certification Exams?
- A: APSE (Association of Professional Sales Engineers) Certification Exams validate your expertise in sales engineering, demonstrating your skills in technical sales, customer relationship management, and effective communication of complex technical solutions.
- Q8: Why should I pursue APSE Certification?
- A: APSE Certification enhances your professional credibility, showcasing your proficiency in sales engineering. This can lead to better job opportunities, higher salaries, and career advancement in the technical sales and engineering fields.
- Q9: What are the benefits of APSE Certification?
- A: Benefits include recognition as a certified sales engineer, improved job performance, access to exclusive resources, continuing education opportunities, and the ability to stay current with the latest industry trends and best practices.
- Q10: Who should take APSE Certification Exams?
- A: Sales engineers, technical sales professionals, account managers, and anyone involved in selling technical products or solutions should consider these certifications to validate their expertise and advance their careers.
- Q11: What types of APSE Certification Exams are available?
- A: APSE offers various certification paths, including Certified Professional Sales Engineer (CPSE) and other specialized certifications tailored to different aspects of sales engineering and technical sales.
- Q12: How do I prepare for APSE Certification Exams?
- A: Preparation can include official APSE training courses, study guides, practice exams, online tutorials, and hands-on experience in sales engineering and technical sales.
- Q13: Where can I take APSE Certification Exams?
- A: APSE Certification Exams can be taken online or at authorized testing centers, providing flexibility to fit your schedule and location.
- Q14: How do APSE Certifications impact my career?
- A: APSE Certifications significantly boost your career by demonstrating your expertise to employers, making you a more competitive candidate for advanced roles and promotions in technical sales and engineering.
- Q15: Are there any prerequisites for APSE Certification Exams?
- A: Some exams may have prerequisites, such as foundational knowledge or prior certifications. Check the specific requirements for each certification path on the APSE website.
- Q16: How often do I need to recertify for APSE Certifications?
- A: APSE Certifications typically require continuing education and recertification every three years to ensure that certified professionals stay updated with the latest industry practices and standards.