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Case 580k fuel issue
- Thread starter Steve111
- Start date
Tinkerer
Senior Member
It is the line that goes from one injector to another and has the tees in it.
Steve111
Well-Known Member
OK so that small line on top. You suggest just taking it off the injector pump and just blowing compressed air through it?
That looks like it says Lucas Cav on the side of it, and that's the style of pump, so I'm not sure if Thepumpguy's suggestion on the return fitting on the bosch still applies or not. If it does, take the FITTING out of the top of the pump, and clean that out, in addition to the line.
Post some more pics if you can, they don't have to be high quality, 1meg or less if plenty, a couple angles on every component in the fuel system will go a long way toward good answers.
Post some more pics if you can, they don't have to be high quality, 1meg or less if plenty, a couple angles on every component in the fuel system will go a long way toward good answers.
mitch504
Senior Member
usually, a clogged return line will give you a machine that starts, runs a second or 2, and shuts off, over and over. I've never seen a machine run with a clogged return, that doesn't mean it can't happen, but I've never heard of it.
Steve111
Well-Known Member
Steve111
Well-Known Member
thepumpguysc
Senior Member
- Joined
- Mar 18, 2010
- Messages
- 7,556
- Location
- Sunny South Carolina
- Occupation
- Master Inj.Pump rebuilder
Ok it’s a CAV DPA PUMP..
The return connector is the 1 closest to the front of the pump..
w the larger 9/16-14mm line nut u need to remove..
The return connector is the 1 closest to the front of the pump..
w the larger 9/16-14mm line nut u need to remove..
Steve111
Well-Known Member
OK so here is my update. I took the large return line out, blew it out with air and cleaned up the little ball and spring that is in the fitting going into the pump. Also have the old shutoff solenoid on still and it seems to be good. Tested for a little while and it starts right up even after it being in high idle for an extended period of time. Thank you for all that have helped with this. I am hoping that this fixes the issue. So far so good!
jimg984
Senior Member
YOU ARE WELCOME! GLAD TO HELP REMEMBER KISS=== KEEP IT SIMPLE SIMOND lol
thepumpguysc
Senior Member
- Joined
- Mar 18, 2010
- Messages
- 7,556
- Location
- Sunny South Carolina
- Occupation
- Master Inj.Pump rebuilder
Glad it seems fixed..
Dont forget about that return fitting w the spring & ball in it.. Theres a lot of them out there that "no longer have that spring & ball".. {wink}
There may have been something in it somewhere down the line & u blew it out.??
Happy Tractoring..
Dont forget about that return fitting w the spring & ball in it.. Theres a lot of them out there that "no longer have that spring & ball".. {wink}
There may have been something in it somewhere down the line & u blew it out.??
Happy Tractoring..
Steve111
Well-Known Member
Is there any point of that spring and ball in that valve?
jimg984
Senior Member
its a check valve to prevent back flow from tank fuel from injector hits the ball first spring keeps ball close when not using,, try without ball and spring
Steve111
Well-Known Member
I ran the machine today for a while to take a tree down and clean some stuff up. No issues at all between starts and stops to when I would 100 percent have had to open that line up every time in the past. I guess I will leave that ball and spring in for now since everything works great now. If I have an issue again in the future I will be taking it out.
Tenwheeler
Senior Member
It needs to be there a functioning properly.