I've got a new fuel pump on it, and purged all air from the system. It's turning over plenty fast but won't fire. I even gave it a small shot of ether, but all that did was make it turn over even faster for a second or two. Any ideas here?
Truck won't start
- Thread starter Jbevs
- Start date
icanfixall
Official GMM hand model
Its not getting fuel... Its not using the glow plugs for a cold start or.... You removed the injection pump gear cover to install a pump..... Nothing else here but these items...
bghnkinf350
Registered User
Which pump? Lift or IP? Why was it replaced in the first place?
Have you checked fuel pressure?
Have you checked fuel pressure?
Hmmm. It's an electric fuel pump that was replaced because the other one died. I have not replaced the lift pump, but it is not plumbed in to the system either. I will keep tinkering with it I suppose. I have not touched the IP. I have not checked fuel pressure either. Should I get a fairly decent spray out of the schrader valve on the filter assembly? I only get a slight trickle now.
rhkcommander
Full Access Member
i take it you swapped from the mechanical lift pump to an electric,
did you check the fuel filter to make sure it wasn't low on fuel? I have a feeling the fuel drained out and dried out... unless you saw fuel pumping out of the injector lines
and
was the pump a self-priming pump?
did you check the fuel filter to make sure it wasn't low on fuel? I have a feeling the fuel drained out and dried out... unless you saw fuel pumping out of the injector lines
and
was the pump a self-priming pump?
The lift pump has not been hooked up as long as I have owned it (8 months). The filter was basically brand new and prefilled with diesel kleen and atf. Fuel was coming out of the injector lines when cracked. However now I can't get the injector line to seal back up tight again. It is shooiting a tiny stream from where the nut meets the injector. Any ideas here? I have tightened the nut down as much as I can. I suppose I will just hope it stops on its own. 
rhkcommander
Full Access Member
depends on wehre the leak is... maybe a crack in the line
BrandonMag
Dana 50 rebuilder
In order to get it to stop completely, I think you're going to need to take the line off, clean it well and reassemble. Then it should stop leaking.
That sounds like a reasonable approach. I also need to work on my return lines some more. One return line is leaking pretty bad, but more importantly one (of the two) injectors I replaced the orings on is still leaking. I didn't feel the cap snap down, so I think that is the problem and it just needs some more attention. Hmmm, now that I think about it, that is most likely part of the hard starting.
Hurry up warm weather, I've got things I need to do outside!!
Hurry up warm weather, I've got things I need to do outside!!
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