Testing While Driving Vehicle
NOTE:
Use foam padding or clean shop towels to protect vehicle interior and body.
- Remove fuel rail cover. Connect Fuel Gauge (999-5011), or equivalent, to Adapter Hose (951-2614), or equivalent. See Fig 1.CAUTION: Ensure that hose follows rubber intake plenum trim and exits engine bay at rear corner of hood. Fuel gauge "T" valve MUST be outside closed hood. Incorrect arrangement will cause vehicle damage.
- Remove cap from fuel line fitting and attach Adapter Hose loosely. Place foam pad or shop towel between T-valve and mirror. Attach T-valve to left mirror using strap-ties.
- Connect fuel drainage hose to T-valve to prevent fuel from spilling past T-valve directly onto vehicle.
- Tighten Adapter hose fitting onto fuel rail. Turn ignition on and wait for fuel gauge to indicate starting fuel pressure.
- Start engine. Ensure that no more fuel will spill past "T" valve and remove fuel drain hose.
- Drive vehicle and read fuel pressure. Pressure should be approximately 32-45 psi (220-310 kPa). Pressure should be stable at constant load and should fluctuate during acceleration or engine braking. If not as specified, locate and repair fuel pressure leak. If pressure is OK, go to next step.
- Turn ignition off. Attach drain hose to "T" valve. Remove strap-ties from fuel gauge and open vehicle hood. Place Gauge inside engine compartment to prevent spilling fuel on vehicle body during removal.
- Place a container below fuel rail. Remove adapter hose fitting from fuel rail and wait for hose to finish draining before moving. When pressure checking equipment is removed, install cap onto fuel rail fitting. Install fuel rail cover.