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310S Red Seal Automotive Service Technician VIP Practice Exam
310S — The 310S Red Seal exam is administered under Canada's Interprovincial Standards (Red Seal) Program for Automotive Service Technicians; it consists of 150 multiple-choice questions to be completed in 3 hours, with a passing threshold of 70%, and is recognized across all Canadian provinces and territories.
53
Questions
180m
Time Limit
70.00%
To Pass
Question 1 of 53👑 VIP
A customer's vehicle arrives with a complaint of a rough idle and low power. You perform a cranking compression test and find cylinders 1, 3, and 5 (all on the same bank) reading approximately 80 psi, while the other three cylinders read 175–185 psi. A wet compression test on the low cylinders brings readings up to only 85 psi. What is the MOST likely cause?
Questions 2–53 and full explanations are VIP-exclusive.