Checking fuel pressure regulator N276

Remove engine cover. Remove soundproofing from nozzles. Remove fuel return hose -1-.



Seal the open return connection with a blind plug -1-. Connect return line -2- to suitable hose -3-.



Immerse this hose -1- into a suitable container -2- to measure the total return volume. Start the engine and leave it to idle.



Set value after 5-10 seconds: return volume 0 ml. If the specification is not achieved, the fuel pressure regulator -N276- is defective.