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WorksheetsEngine Performance technology
Total questions: 6
Worksheet time: 3mins
The order describing the operation of a four- stroke engine is intake,compression power, and
air-fuel
intake closes
exhaust
crankshaft
Oil is added during a wet compression test,if the compression readings improve,this would indicate
incorrect valve timing
worn valve stem seals
a burny valve
worn piston rings
While testing intake manifold vacuum, a steady reading of 17 to 20 inches of mercury would indicate
a good vacuum reading
a manifold leak
late ignition timing
weak valve springs
Engine revolutions per minute are monitored by the_____ sensor
vehicle speed
crankshaft position
mass airflow
The engine control module uses temperature,speed,and load to control the pluse width of a
fuel injector
vacuum solenoid
diverter valve
purge solenoid
Low engine power and a vacuum reading that drops as RPM increases would indicate
a restricted catalytic convertor
the head gaskets are leaking
worn valve guides
worn thrust bearings
