ASE

Spark plugs are being replaced on a v6 engine. Which of the following should be performed before removing the boot? Twist the boot 1/2 a turn Technician A days that a positive crankcase ventilation (pvc) system reduces vehicle emissions. Tech B says that a pvc system helps increase crankcase pressure. Who is correct? Tech A Tech A says that secondary ignition wires should be inspected when replacing spark plugs. Tech B says that if a new spark plug is dropped it can be used as long as t...

Technician A says that unibody vehicles are generally lighter and more fuel efficient than body- over-frame vehicles. Technician B says that full-size trucks always use body-over-frame constructions. Who is correct? A only. B only. Both A and B. Neither A nor B. Both A and B. The _______ controls the opening of engine's valves. Camshaft. Crankshaft. Valve springs. Combustion chamber. Camshaft. All of the following are major components in the computer system except: Calipe...

Technician A says that when pressure testing a radiator cap, a special adapter is needed. Technician B says the best way to check thermostat operation is while it is in the engine. Who is right? Tech A A technician is checking resistance in an engine's spark plug wires using an ohmmeter. A general rule is to replace a wire if resistance is over: 30,000 ohms Technician A says that in an ignition system, the voltage supplied to the coil during starting is battery voltage. Technician B s...

Magnetic pulse generators are used to provide a digital signal about component speed or position. False A digital signal may be called a square-wave signal. True The manifold absolute pressure (MAP) sensor monitors engine load. True A defective O2 sensor heater may cause reduced open loop time. False A defective vehicle speed sensor may cause improper torque converter lockup. True A vehicle with throttle actuator control may use three throttle position sensors. True The exhaus...

If the compression is 5 psi and the oem spec is 140 psi, what most likely is the cause? A, worn piston ring. B, burnt valve. Both A and B What most likely is the cause if the compression doesn't go up during a wet compression test? A, burnt valve. B, worn piston ring. A What most likely is the cause if the compression goes up during a wet compression test? A, burnt valve. B, worn piston ring. B 2. Blue smoke is coming from the exhaust pipe of a vehicle, what most likely is the ca...

Accessories Parts that add to the appearance or performance of a vehicle Accounts Receivable Money due from customers Accumulator Part of an air conditioning system that contains a desiccant that absorbs moisture from the refrigerant Active accounts Current customers who make frequent purchases Active stock Merchandise in the store that is readily available for sale to customer Air conditioning (AC) A system that removes moisture and humidity from the interior of the cabin and c...

A diesel engine has excessive oil consumption with no visible oil leaks. Which of these could be the cause? (D) A leaking turbocharger impeller shaft seal Which of these could be the cause of blue smoke from the exhaust on a vehicle that is not equipped with an exhaust aftertreatment system? (C) Worn piston rings During long uphill pulls, a delivery truck equipped with an engine protection system activates a warning light and buzzer, and the engine derates power. Which of these could be t...

How would you adjust a rack yoke bearing? Tighten, then look at OEM specifications and back off by the suggested amount of degrees. If a customer states that their steering wheel turns more to the left than to the right, what are some of the most likely causes? - Incorrectly timed steering gear - Bent pitman arm - Bent tie rod A customer says that their vehicle is difficult to steer, but only in one direction. What is the most likely cause? A faulty or leaking power steering gear. ...

ASE (Entry level technician prep) - Brakes A5 A5 Question 1 The brake pedal is low and spongy; all brake adjustments have been completed according to specifications. The cause of the problem could be: A) Binding pedal linkage. B)Dented brake line. C)Plugged compensating port. D)A weak hydraulic hose. Answer D is correct! Binding pedal linkage would cause a hard pedal and perhaps an effective brake system. This is also true for a dented brake line. A plugged compensator port ma...

ASE Diesel Practice Test. When a diesel engine is operated under a load, coolant continually comes out of the radiator overflow and there are bubbles in the radiator. Which of these is the most likely cause? (A) Too much coolant in the cooling system (B) A clogged radiator (C) A stuck-open thermostat (D) Compression leakage into the cooling system Correct Answer: D A diesel engine has excessive black smoke when started in the morning. Which of these could be the cause? (A) A bad ...