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 2005 IC getting air in fuel
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mrpicky
Senior Member

123 Posts

Posted - 05/31/2023 :  3:29:53 PM  Show Profile  Visit mrpicky's Homepage  Reply with Quote
I am working on a 2005 IC RE DT-466. Having a tough time starting because of air in the fuel. Have replaced the lift pump and made sure the fittings were tight. I can get the bus to start if I prime the fuel system but eventually more air gets sucked in and it dies. Made sure the fuel filter was changed and the cap on tight. Also, did the same for the strainer. Icp pressure is good when bus is running with fuel pressure at 68 psi. Could use any suggestions. Thanks in advance.

mrpicky
Senior Member

123 Posts

Posted - 05/31/2023 :  4:38:25 PM  Show Profile  Visit mrpicky's Homepage  Reply with Quote
Forgot to mention no check engine light codes.
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Bluenozer
Top Member

Canada
655 Posts

Posted - 06/05/2023 :  07:41:30 AM  Show Profile  Reply with Quote
did you change all the fat o rings on those lines , seen them split and not seal
could be an o ring in the primer also

OEM trained in wiring and all engine platforms for over 20 years
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mrpicky
Senior Member

123 Posts

Posted - 06/05/2023 :  9:07:10 PM  Show Profile  Visit mrpicky's Homepage  Reply with Quote
Yes, I replaced the primer and the o rings on the lines.
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exmod110
Senior Member

151 Posts

Posted - 06/06/2023 :  09:24:05 AM  Show Profile  Visit exmod110's Homepage  Reply with Quote
is it air or combustion gas getting into the fuel system?
pick up tube in tank cracked, any of the connections loose?
no external leaks? lightly pressurize the tank and look for the wet spot? lol
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mrpicky
Senior Member

123 Posts

Posted - 06/10/2023 :  12:00:06 PM  Show Profile  Visit mrpicky's Homepage  Reply with Quote
Yes, o-rings were bad on fuel injectors. R/R all six injectors and o-rings.
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