ENGINE REPAIR (A1) No. of Questions= 10 Pass mark is - 75 %. You can press the Mark it button at the bottom of the page to have the quiz marked. Please attempt all questions. You need 75% to progress. 1. Technician A says that black exhaust smoke is an indication of too rich an air-fuel mixture. Technician B says that white smoke (steam) is an indication of coolant being burned in the engine. Which technician is correct? a) Technician A only b) Technician B only c) Both Technician A and B d) Neither Technician A nor B 2. Excessive exhaust system back pressure has been measured. Technician A says that the catalytic converter may be clogged. Technician B says that the muffler may be clogged. Which technician is correct? a) Technician A only b) Technician B only c) Both Technician A and B d) Neither Technician A nor B 3. A head gasket failure is being diagnosed. Technician A says that an exhaust analyzer can be used to check for O2 when the tester probe is held above the radiator coolant. Technician B says that a chemical-coated paper changes color in the presence of combustion gases. Which technician is correct? a) Technician A only b) Technician B only c) Both Technician A and B d) Neither Technician A nor B 4. Two technicians are discussing disassembly of an engine. Technician A says that the engine can be disassembled in any order that is possible. Technician B says that cylinder heads and manifolds should have their attaching bolts loosened in the reverse order of the tightening sequence. Which technician is correct? a) Technician A only b) Technician B only c) Both Technician A and B d) Neither Technician A nor B 5. Technician A says that pistons should be removed from the crankshaft side of the cylinder when disassembling an engine to prevent possible piston or cylinder damage. Technician B says that the rod assembly should be marked before disassembly. Which technician is correct? a) Technician A only b) Technician B only c) Both Technician A and B d) Neither Technician A nor B 6. Before the valve is removed from the cylinder head, _______. a) The valve spring should be compressed, locks removed, and any ridge on the stem be removed. b) The valve tip edges should be filed c) The seat should be removed d) Both a and b 7. An engine miss is being diagnosed. One spark plug wire measured "OL" on a digital ohmmeter set to the K ohm scale. Technician A says that the spark plug should be replaced. Technician B says that the ignition coil should also be replaced. Which technician is correct? a) Technician A only b) Technician B only c) Both Technician A and B d) Neither Technician A nor B 8. Engine ping (spark knock or detonation) can be caused by ________. a) Advanced ignition timing b) Retarded ignition timing c) The wrong oil additives d) EGR stuck open 9. Two technicians are discussing the diagnosis of a lack-of- power problem. Technician A says that a worn (stretched) timing chain could be the cause. Technician B says that retarded ignition timing could be the cause. Which technician is correct? a) Technician A only b) Technician B only c) Both Technician A and B d) Neither Technician A nor B 10. Technician A says that low fuel pressure can cause the engine to loose power. Technician B says that all fuel pumps only needs to be able to pump 1/2 pint per minute. Which technician is correct? a) Technician A only b) Technician B only c) Both Technician A and B d) Neither Technician A nor B Go to top of quiz © 2004 Prentice Hall. All Rights Reserved.
No. of Questions= 10 Pass mark is - 75 %. You can press the Mark it button at the bottom of the page to have the quiz marked.