Accord L4-2156cc 2.2L SOHC (1991)
Fuel Pressure Regulator Return Hose
4. Check that the fuel pressure rises when the vacuum hose is disconnected from the pressure regulator again.
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If the fuel pressure rises then the pressure regulator is good.
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If the fuel pressure did not rise, check whether it rises when the return hose is lightly pinched.
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If the pressure does not rise, replace the pressure regulator and retest.