HD10 - Check Fuel Pressure

*** THIS ARTICLE REFLECTS CHANGES MADE BY TSB # 9410B19, June 1994

WARNING: THE FUEL SYSTEM WILL REMAIN PRESSURIZED WHEN ENGINE IS NOT RUNNING. TO PREVENT INJURY OR FIRE, USE CAUTION WHILE WORKING ON THE FUEL SYSTEM.

- Key Off.

- Install fuel pressure gauge.

- Start and run engine at idle. Record fuel pressure.

- Increase engine speed to 2500 rpm and maintain for one minute, Note and compare fuel pressure.

- Is fuel pressure between 30-45 psi (210-310 kPa)?

YES -- GO to HD11. HD11 - Check Ability of Fuel System to Hold Fuel Pressure

NO -- GO to Pinpoint Test Step HC9 to check the integrity of the Fuel Delivery System. HC9 - Check Regulator For High Pressure Cause