Technician A says to pressure clean the fuel system at between 75-90 PSI before starting the engine. Technician B says to pressure clean the fuel system using a 2:1 mixture of solvent to gasoline. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A
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Oil is found in the air filter housing. Which of the following conditions could be the cause?
A. Worn piston rings B. Worn valve guide seals C. Clogged PCV valve D. Both A and C
Two technicians are discussing the use of a typical bench/pedestal mounted grinder. Technician A says that a wire brush wheel can be used to clean threads. Technician B says that the grinding stone can be used to clean threads. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Several technicians are complaining of headaches and nausea while working in a closed shop. Technician A says the cause may be an odorless, colorless, tasteless gas. Technician B says the cause may be traced to a leak in the shop's exhaust system. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
For every one PSI increase in cooling system pressure, the coolant's boiling point is raised how many degrees F?
A) Two B) One C) Five D) Three