Sos Mechanic Certificate -Engine Repair Exam Questions (52 Terms) With Verified Definitions Updated 2024

THE COMPRESSION TEST HAS SHOWED THAT THE MIDDLE TWO CYLINDERS ON ONE SIDE OF A V-8 ENGINE HAD READINGS OF 50 PSI. THE OTHER CYLINDERS HAD READINGS BETWEEN 135 PSI AND 140 PSI. WHAT IS THE LIKELY CAUSE OF THIS CONDITION? {Ans: A BLOWN HEAD GASKET.}WHAT IS BEING CHECKED ON THE VALVE SPRING IN THE ILLUSTRATION BELOW? {Ans: INSTALLED HEIGHT}WHICH ONE OF THE FOLLOWING IS A SAE GRADE 5 BOLT? {Ans: C}YOU ARE USING A VACUUM GAUGE CONNECTED TO THE INTAKE MANIFOLD. WHICH OF THE FOLLOWING IS TRUE? {Ans: WHEN THE ENGINE IS RAPIDLY ACCELERATED, THE NEEDLE WILL RISE TO A HIGH READING.}THE VALVE TIMING ON MOST ENGINES IS CONTROLLED BY: {Ans: A BELT, CHAIN OR GEAR DRIVE}WHAT IS THE READING OF THE 0-1 INCH MICROMETER BELOW? {Ans: 5.750" wrong 1.599 is prob right answer}