Fuel rail valves and bleeding..

TimR

Member
Messages
2,656
I notice the fuel rails both have relief valves...
Do I need to bleed the system before firing the motor having drained the rails and injectors and such..?Im thinking they will prime with ignition/pump activation but I perhaps need to relieve air in the process...?
Any info would be good..!?!

Grtzzz...!

Tim
 

Gp79

Member
Messages
1,393
I think they are to connect a pressure gauge to check each rail.
The injectors opening will bleed any air.
 

conaero

Forum Owner
Messages
34,593
I think they are to connect a pressure gauge to check each rail.
The injectors opening will bleed any air.

Correct, the bleed valves are there purely to test for fuel rail pressure. If you remove the cap with the ignition on, and depress the valve on each rail a jet of fuel should shoot 8 foot in the air to show you have pressure. Watch your eyes if you do and don't spray it all over your bodywork or a hot engine.