Compressed Natural Gas Vehicle Test
ASE F1 Alternate Fuels Certification Practice Test will test your knowledge of the skills needed to diagnose, service, and repair compressed natural gas vehicles.
#1. An EPA-certified CNG system has failed emissions due to a failure of a high cost system component. The best first step in repair should be to:
check with the system manufacturer for warranty is correct
#2. Which of these should be used to check the fuel line connections after a compressed natural gas conversion?
non-ammonia soap is correct
#3. After installing a new CNG fuel tank, the technician finds that the vehicle will not accept fuel. Which of these could be the cause?
A failure to open the manual lock-down valve(s) is correct
#4. A hoop-wrapped Type-2 cylinder shows evidence of stress corrosion cracking. What should the technician do?
Remove the cylinder from service is correct
#5. A dedicated CNG vehicle has a no-start condition. All of these could be the cause EXCEPT:
recurved timing is correct
Current tech’s have to retest every 5 years to keep their certification up to date, that official test is called the F1R
This is not an official test it is a practice test based on the official study guide. Use it for entertainment purposes only.