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Hello.
Injector pump has fuel everywhere, but won’t pump to injector lines.
Backstory. Only 350 hours, and runs great. Always starts. To shut off the tractor, you pull the fuel cut off. This time, I started the tractor and it seems the throttle is stuck open, and the engine goes to max rpm. I pull the fuel cut and the engine shuts down. I recheck throttle and try to restart. But it won’t start. Not getting fuel. Check flow from (full) tank to the top of injector pump and have diesel at all points. Thinking it must have some air, I crack open injector line, and it’s full of diesel. I turn over the motor, but no squirting on any of the three.
Now I’m back to the fuel cut off. I notice the set screw on the cable slipped about a half inch. The fuel cut valve of the side of the injector pump can move a bit either side of center. So I wonder if this is why no fuel is being pumped to each cylinder. I read somewhere that the fuel cut valve is (closed)(open)(closed), with open somewhere in the middle? I’ve tried moving the valve but can get fuel to pump to injector lines. I also wonder about the overrun issue. Thanks Ian
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The fuel cut off lever should be full forward to be in “Run”.
The throttle linkage is at idle when full forward. See Picture.
If your throttle linkage is not loose and you had a run away, I suspect there is an issue with the governor. I would recommend draining and replacing the oil as the first easy step. Instructions are on page 40 of this document:
http://harnerfarm.net/Jinma/Files/jinma_manual.pdf
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Since you pulled the stop lever from the full fuel position the rack could be jammed in the no fuel position. Since there is no mechanical connection between the throttle linkage and the rack you may have to remove the side cover to free it up. If you had a seemed runaway with the throttle in the full fuel position you may be ok, but if the throttle was at idle or half you do have a governor problem.
Account deleted.
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well it has been a few days off the air have you made any progress since?
yes success yesterday. Finally got some time to dig into the injector pump.
removed oil filter and housing with spacer. Now I can access all three screws on governor. I cracked open the case, and it was bone dry. Rusty and seized. Everything . No large ball bearings in mine. There are 4 square blocks that pivot and a cylinder with a small bearing inside. The fuel cut off piston was stuck out.
i cleaned, lubed. And reassembled. And she fired right up! :yahoo:
Thanks for the support.
ian
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