Final answer:
Fuel that does not vaporize readily enough can cause vapor lock, hard starting, or detonation.
Explanation:
Vapor lock can occur when a fuel does not vaporize readily enough, especially in hot conditions, causing the fuel to vaporize too early in the fuel delivery system, leading to a loss of fuel pressure.
This can result in hard starting or even stalling of the engine due to the fuel not reaching the combustion chamber effectively.
On the other hand, detonation is usually related to premature combustion caused by factors like low octane fuel, leading to engine knocking.
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