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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 43335
Experience:  Service manager and technician for all brands of engines with 40 + years of experience.
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How do I get air out of diesel system on 26u hitachi, It ran

Customer Question

How do I get air out of diesel system on 26u hitachi
JA: When did you last clean or perform maintenance on your Hitachi engine? How old is it?
Customer: It ran out of diesel. It won't fire up again.it nearly starts.
JA: How long has this been going on with your Hitachi engine? What have you tried so far?
Customer: It's only happened today. If I loosen the injectors would that let the air out?
JA: Anything else we should know to help you best?
Customer: No
Submitted: 11 days ago.
Category: Small Engine
Expert:  Curtis B. replied 11 days ago.
Have you opened the bleeder at the injection pump? Have to get all the air out up to the injection pump, before loosing the injector lines.
Customer: replied 11 days ago.
It has an automatic bleeder.
Expert:  Curtis B. replied 11 days ago.

Is the electric fuel pump running when you turn on the key to pump the fuel?

Customer: replied 11 days ago.
No it doesn't seem to be
Expert:  Curtis B. replied 11 days ago.

If the pump is not running, it will not prime the fuel system.

Customer: replied 11 days ago.
What do u suggest
Customer: replied 11 days ago.
In an automatic bleeder do u still need to open the injectors.
Expert:  Curtis B. replied 11 days ago.

Locate the fuel pump and see if it has voltage to it with the switch on. If it does, and the pump is not running, replace the pump. If there is no voltage. look for a blown fuse or power the pump direct from the battery and see if it will run.

Expert:  Curtis B. replied 11 days ago.

Do you have electronic injectors? Yo do not want to open them. If standard mechanical injectors, it is ok to loosen the high pressure lines to bleed.

Customer: replied 11 days ago.
How do u no if they are electronic injectors?
Expert:  Curtis B. replied 11 days ago.

You just have to be sure the high pressure pump fills the injector manifold.

Customer: replied 10 days ago.
I can hear the fuel pump how long would I need key turned on to bleed it.
Expert:  Curtis B. replied 10 days ago.

Usually the pump will only run a few seconds, so you have to cycle the key on and off, at least 6 times to bleed the system.