jonk

Trying to work out where the fuel enters into the common rail on the I6 'before' the fuel goes to the injectors.

Does the fuel, enter the rail at the front of the motor, or at the back next to the firewall.

I know there is also a bleed tube/pipe that takes away excess fuel and returns it to the tank out of the common rail but I want to make sure that haven't got the two mixed up.

I'm pretty sure the fuel enter's from the front, underneath the rail, so to cool the fuel with airflow coming from around the fan/radiator; before it enters the rail at the front.

Could be wrong though... any idea's?

Zoltan

In the case of my NA 3.9 MPFI dual-fuel it looks to go thru the fuel pressure regulator (at the back of the rail) then back out the bottom (after its passage thru the rail) back into the tank. Looking under the bonnet of my AU11 6 factory duel-fuel, a similar set-up but the regulator is at the front end of the rail.

usernameremoved

Depends which I6 you have.

XF entry and exit is at the rear. Top one is entry

jonk

The I6 is the AU Tickford 4.0litre

It's in a '99 Fairlane but the same engine as the XR6 motor except slightly detuned.

I really should have put that info above in at the start. Don't ask me why I didn't...

duh

falcon_boy

if u are talking bout falcon e series... the fuel comes from steel lines under the car up to the firewall, then rubber hose directly into the rail the regulator holds the rail pressure and returns excess fuel to tank.