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A fuel pressure regulator is a device that helps maintain proper engine fuel pressure, preventing problems such as blown headgaskets and damaged valves. The fuel pressure regulator is usually mounted on the engine block and can be fitted with a variety of gauges to monitor its status. Every vehicle has a specific requirement for the fuel pressure that it needs to run at maximum efficiency. This requirement is known as 'engine load'. The higher the engine load, the more fuel is required to push the engine through the power stroke, and therefore the higher the level of fuel pressure that is requ
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