FDS11 - Check Regulator For High Pressure Causes

*** THIS ARTICLE REFLECTS CHANGES MADE BY TSB #9424B1, DATED November 24, 1994

^ Key Off.

^ Remove return fuel line at fuel rail and connect short hose from rail to measured container of at least one quart capacity.

^ Ground Fuel Pump (FP) lead as in step FDS2. FDS2 - Fuel Pressure Test

^ Key On, Engine Off.

^ Record fuel pressure and note whether fuel is being returned to measured container. Unground FP lead after 10 seconds or if container is more than half full.

^ Is fuel pressure within specification?

YES -- Go to FDS12. FDS12 - Check Fuel Return System

NO -- Replace fuel pressure regulator. Repeat Test Step FDS2 for verification. FDS2 - Fuel Pressure Test