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Answer :
Final answer:
The subject of this question is about Engine Operation Using the throttle when the choke is on can lead to engine 'flooding', which is an inefficient and potentially damaging combustion process due to an excessive fuel-air mixture. The role of the choke is to restrict air flow into the carburetor for a richer fuel mixture, but using the throttle negates this effect by opening the air passage.
Explanation:
You shouldn't use the throttle when the choke is on because it can lead to a condition known as 'flooding'.
Flooding happens when a large amount of fuel is mixed with too little air, causing the combustion process in the engine to become inefficient.
This condition can make it more difficult to start the engine and can also result in unnecessary engine wear.
The choke's purpose is to restrict airflow into the carburetor to enrich the fuel-air mixture for starting the engine, giving the engine an extra boost of fuel.
However, if the throttle is also engaged, it opens the air passage, negating the effect of the choke, and causing an overabundance of fuel into the combustion chamber, resulting in flooding.
Therefore, it's important, especially in cold start situations, to turn the choke on and resist the urge to use the throttle until the engine has warmed up and the choke has been turned off.
Learn more about Engine Operation
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