Injection pump help

Mtractor

Member
I have a IH 260 backhoe with the D 239 engine. It has the Bosch injection pump. The thing had not been run in 3 years. I drained the fuel tank it had some trash and some water in it. I took all the lines loose and blew through them. Changed fuel filters added new fuel. I can not get fuel past the injector pump. I can get it to run on starting fluid giving it small amounts. I have been told there is a electric solinoid that I need it does light up when you put a test light on it but I can't feel or here a click. But I really don't know.
 
Most likely just pull the solenoid and free it up . When you say it lights up you are getting power to the solenoid but the plunger is not retracting to let the pump have fuel. Nothing to pulling it and just hold it down where it will have a ground and try the power. You can see it is retracting or not.
 
The screw that the wire going to the solinoid is hot with the test light when I turn the key on. How do I clean it?
 
Just go down to the base take a wrench and screw the solenoid out, once it is out you have a small pointed plunger that is stuck.
 
Is the solinoid right below where the wire hooks up? If it is its on the back side if the pump. How do I get to it?
 
Bosch VA or VE pump? If VA and it's been setting awhile it may have both the throttle valve and spill valve stuck, and both operating pins broken inside. The VA pumps with the electric solenoid on the back side when working correctly the rod pushes the throttle valve about 1/8 inch to run, and the throttle return spring inside pushes it to off. If the valve is stuck like I've seen in the past the only way it might work again is to completely tear down the pump for a thorough cleaning of the stale fuel varnish buildup inside. Have you had the two screw timing dover off to see what it looks like inside?
 
My first guess is you have a VA CR pump, but the thought of an electric shut off could be a VE pump. Either Bosch pumps have a similar problem to all injection pumps now days. The new ultra low sulfur diesel, causes pumps to lock up after extended periods of time. Biodiesl causes pumps to lock up in as low as 3 months. 20-25% of all the pumps I do anymore are from being stuck. No fault of the owner, just victims of our new fuel. Most Older I-H engines will have a Roosa rotary, Bosch VA rotary, or the american Bosch 100 pump on them. Cost to pull down and reseal each of these should be close in cost. About 350-450 bucks. Make sure you find someone who has experience and a test bench to make sure you get you problem fixed correctly. I have seen to many Home fixes go south then the repair can get pricey. If no one in your area wants to treat you right please feel free to give me a call. Good luck,, Al 231/757/0064
 
I have 806 international that was running good I was in the pasture and ran out of diesel so I got diesel put it in come to find it wasnt out of diesel I changesd the filters and its not airlocked it will run as long as the bolt that's screwed out and spraying fluid it will run good but when you screw it back in it kills it how do I go about fixing this problem
 
This has just started yesterday it hasnt been sitting up for a while why is it that when you pull the screw out a nd it sprays fluid it runs just fine but you put it in it kills instantly
 
If the fuel shutoff solenoid for a VA pump is the same as the VE pump, Volkswagen is the cheapest place to get a replacement.

Or get a magnet, pull the plunger out of the pump, and run the manual shut-off.
 
(quoted from post at 00:06:55 05/25/16) I have 806 international that was running good I was in the pasture and ran out of diesel so I got diesel put it in come to find it wasnt out of diesel I changesd the filters and its not airlocked it will run as long as the bolt that's screwed out and spraying fluid it will run good but when you screw it back in it kills it how do I go about fixing this problem

Fuel return line is plugged coming out of the top of the injection pump. There is an elastic ring that breaks up into tiny pieces that plug the return fitting. Take the timing cover off the side. If it looks like coffee grounds inside you found the problem. Cleaning the return fitting should allow the engine to run but you risk doing more damage to the governor retaining parts if continued to be operated with the ring broken up.
 

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