Small Engines iCEV Questions and Answers Latest Version Already Passed

Small Engines iCEV Questions and Answers Latest Version Already Passed What is the most common cause of engine overheating in small engines? Low coolant levels or clogged cooling fins. What does the compression ratio of an engine affect? It affects the engine’s power output and fuel efficiency. When troubleshooting a small engine, what should be the first thing checked if the engine does not start? Fuel availability and fuel quality. What is the function of the carburetor in a small engine? The carburetor mixes air and fuel in the correct ratio for combustion. What causes a small engine to backfire during startup? A rich fuel mixture or delayed ignition timing. 2 What part of the small engine is responsible for converting mechanical energy into electrical energy? The alternator or stator. What could be the reason for a small engine running rough or misfiring? Worn spark plug, fuel system issues, or ignition system faults. What tool is used to check the compression in a small engine? A compression tester. How does a governor control engine speed in a small engine? It adjusts the throttle valve position to maintain a constant RPM under varying loads. What is the most likely cause of excessive smoke coming from a small engine? Worn piston rings or valve seals causing oil to enter the combustion chamber. Why is it important to replace the air filter regularly in a small engine? 3 A dirty or clogged air filter reduces engine efficiency and may cause engine damage due to poor airflow. What could cause a small engine to stop running after being started and then restarted several times? A faulty fuel shutoff valve or a dirty carburetor. What is the purpose of the exhaust valve in a small engine? To allow exhaust gases to exit the cylinder after combustion. What should you inspect when a small engine is not getting fuel to the carburetor? Fuel lines, fuel filter, and fuel pump (if equipped). How does a small engine governor respond to an increase in load? It slows down the engine to maintain a constant speed. What is the main reason for a small engine to experience low oil pressure? Worn oil pump or low oil levels. 4 What does the ignition coil do in a small engine? It generates the high voltage needed to produce a spark at the spark plug. What is the effect of a clogged fuel filter on a small engine? It restricts fuel flow to the carburetor, causing the engine to run poorly or not start. What is the purpose of a spark arrestor in a small engine exhaust system? To prevent sparks from escaping the exhaust and igniting nearby flammable materials. What maintenance procedure helps prevent carbon buildup in a small engine’s combustion chamber? Using the correct fuel mixture and regular maintenance of the spark plug. What part of a small engine controls the timing of the spark? The ignition system, which includes