AEM 25-112BK High Volume Fuel Rail - Manual (Page 2)

! WARNING
Read and understand these instructions BEFORE attempting to install this product.
• Do not smoke while working on the fuel system.
• Keep open flames or sparks away from your work area.
• Be sure to relieve fuel pressure while engine is off.
1)
Getting started
a) Make sure vehicle is parked on a level surface.
b) Set parking brake.
c) Disconnect the negative cable from the negative battery terminal.
d) If engine has run within the past two hours let it cool down.
e) Clean area around the fuel rail so that dirt cannot get into the engine.
Note it is recommended to:
• Replace the washer between the service bolt and the special banjo bolt whenever the service bolt is
loosened. (where equipped)
• Replace all washers whenever the bolts are removed.
• Replace all cushion rings, seal rings and fuel injector insulators when fuel rail is disassembled.
2) Relieving fuel pressure
a) Remove the fuel fill cap.
b) On models equipped with a 6mm service bolt. (illustrated below) If your vehicle is not
equipped with a 6mm service bolt, then proceed to step c.
i) Use a box end wrench on the 6mm service bolt on top of the fuel filter or fuel rail, while holding the
special banjo bolt with another wrench.
ii) Place a rag or shop towel over the 6mm service bolt.
iii) Slowly loosen the 6mm service bolt one complete turn.
iv) Leave service bolt loose until all pressure has been relieved.
v) Tighten service bolt to 10 lbf-ft.
c) On models not equipped with a 6mm service bolt.
i) Use a box end wrench on the 12mm banjo bolt on top of the fuel filter.
ii) Place a rag or shop towel over the 12mm banjo bolt.
iii) Slowly loosen the 12mm banjo bolt one complete turn or until all pressure has been relieved.
iv) Torque the 12 mm banjo bolt to 25 lbf-ft.
Service Bolt
10 lbf
z ft
Fuel Filter
Shop Towel