GDI ± Fuel Pump (High Pressure) and Fuel Pressure Regulator (High Pressure)
13A-110
" CA FUEL RETURN PIPE/FUEL PRESSURE
HOSE/FUEL FEED PIPE INSTALLATION
Apply a small amount of fresh engine oil to the O-ring.
Caution
Take care not to let any of the engine oil get inside the
fuel pump (high pressure), fuel pressure regulator (high
pressure) or the delivery pipe assembly.
" DA BACK-UP RING/O-RING INSTALLATION
Install the back-up ring and the O-ring as shown in the
illustration.
Caution
Take care not to install the back-up ring A for the injector,
fuel feed pipe or fuel return pipe by mistake. (Outer
diameter of the back-up ring for the fuel pressure sensor:
15.1 mm)
" EA FUEL PUMP (HIGH PRESSURE) INSTALLATION
1. Apply a small amount of fresh engine oil to the fuel pump
(high pressure) roller and O-ring.
2. Install temporarily the fuel pump (high pressure) to the
cylinder head.
3. Install the fuel feed pipe, and then tighten the fuel pump
(high pressure) mounting bolts to 5 Nm in the order shown
in the illustration.
4. Tighten the bolts to 17 Nm in the order shown in the
illustration. The overall difference in tightening torque
between the four bolts should be within 2 Nm.
" FA FUEL PUMP (HIGH PRESSURE) AIR BLEEDING
1. Run the engine at 2,000 r/min for 15 seconds or more
in order to bleed the air.
NOTE
When removing the fuel pump (high pressure), air may
get into the fuel pump (high pressure). If air gets into
the fuel pump (high pressure), diagnosis code No.56 for
abnormal fuel pressure will be output.
2. Use the MUT-II to check the diagnosis code. If the
diagnosis code No.56 for fuel pressure sensor system
defect is output, erase it.
Back-up ring
O-ring
Fuel pressure sensor
1
2
3
4
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