Fuel Pressure Is High
- Fuel pressure regulating valve
- Pressure relief valve
- Fuel lines
Fuel Pressure Regulating Valve
A improperly operating fuel pressure regulating valve may cause high fuel pressure. If a problem is suspected, inspect the return fuel pressure regulating valve. Clean any contamination or debris that may keep the regulating valve from operating properly. If debris is present, find the source of the contamination. Replace the return fuel pressure regulating valve if the valve is worn or damaged.
Inspect the pressure relief valve that is in the body of fuel transfer pump. Check for damage to the spring or to the valve assembly.
Inspect the fuel lines for damage. A restricted return fuel line can increase fuel pressure.
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