Farm Pro 2420 will not start

[Diamondpilot]

One other thought is the fuel cut off lever. You said it ran when you parked it and not now. Make sure the fuel cut off is not stuck down at the pump.

Chris

 

[RonMar]

One other thought is the fuel cut off lever. You said it ran when you parked it and not now. Make sure the fuel cut off is not stuck down at the pump.

Chris

Good point, the fuel cuttoff/engine shutdown cable attaches to a lever on top of the pump and pulls that lever to the rear to shutdown the engine. This lever needs to be all the way forward to run the engine. Also make sure the throttle is forward and try the injector hardline bleed again. There is a setscrew that sets the idle speed, but if it is misadjusted, the throttle position could prevent fuel from reaching the injectors. The higher the throttle is set, the more fuel should come out at each IP pump stroke(makes bleeding the hardlines go faster).

 

[Larry B]

Still can't get it to run. The fuel filter is full and vented.I disconnected the cable to the fuel cutoff lever so it can go forward until it hits the casing of the injector pump. Still no fuel pumping out of the hard lines to the injectors when I crank the engine.

I had not checked the oil in the injector pump. Didn't even know I should. There is a breather of sorts on top of the pump case and a 10 mm bolt on the rear of the casing with a red paint splotch on it. Removed them both and couldn't see any oil from either spot so I filled through the top until I got oil out of the bolt on the side. Seemed reasonable, hope that is right. I used 30 w Rotella. Then another cycle of hand pump and bleed and still no fuel from the injector pump when I crank it.

I am suspicious of the fuel cutoff because it used to pull out further than it does now. There is a pin through the lever into the shaft and that appears to be fine. THe shaft moves with the lever, I just noticed the knob did not pull out as far as it did previously.

I keep thinking this should be something simple/obvious since the tractor only has 40 hours on it. Anybody know how the pump is driven or how the fuel cutoff works? Any other suggestions?

Thanks for your help.

 

[DwayneB]

the fuel pump is driven by a gear. It's right under the cover in front of the pump. It's keyed onto the shaft of the pump and held on with a bolt in the center. Could be it fell off but, not likely. Easy to check though. Just pull the front cover.

I don't change the oil in my pump but, I do flush it every time change the engine oil. I just squirt oil in the filler tube till it runs clean out the overflow. Always get some dirty oil out this way.

 

[Bob Rooks]

I don't change the oil in my pump but, I do flush it every time change the engine oil. I just squirt oil in the filler tube till it runs clean out the overflow. Always get some dirty oil out this way.

The philosophy behind changing injector pump oil is that it does become contaminated and diluted with diesel fuel, and you know what happens then. All you are accomplishing is sweetening the oil. An oil analysis performed periodically will show the increase in fuel dilution. It's all about responsible maintenance practices.

 

[Bob Rooks]

Larry B,
If you ran the fuel injection pump and governor without oil for a period of time, you will be extremly lucky if they are not toast! We're talking ~$350.00 here. Any warranty? Who prepped the tractor?

 

[Diamondpilot]

I agree with Bob on this one. Change the injector pump oil. I do so every other oil change at 100 hrs. (Change my engine oil at 50 hrs.) I just use 15W40 but any oil will really work. Many use strait 30W and others use compressor oil.

The main thing you are doing is verifying that fuel is not diluting the oil.

Now for the starting issues I think now you may have run your pump with out oil. How much did you put in? Mine only takes 12 oz or so. Its a Jinma 284 so it may be a little different than yours. I have 2 10mm drain plugs, a mushroom type vent/fill, and a 10 mm site plug with a little drain on it. To change I just pull both drain plugs. To fill just pour in about 15 oz and let it find the proper level and drain into a catch pan. Like I said mine uses about 12 oz I would guess so I add 15 oz and let it sit overnight to find the proper level.

I would try to verify that the cut off rack inside the pump is not stuck due to lack of oil. I can not tell you how to do this but it can be done. This has happened before to others due to low pump oil. I am sure someone will chime in. Just be careful in there and remember if you remove the pump it must go back on the same way to keep it in time.

Chris

 

[Larry B]

Emergent issues kept coming up so I am just now getting back to my Farm Pro 2420. Thanks for all the past advice.

I am still working on the starting issue. I drained the fuel tank, cleaned the screen and sediment bowl, and then did another flush and fill. The fuel pump worked fine and the hand pump worked fine. Bled everything and still got nothing out of the injector pump. Removed the fuel pump and inspection cover. Couldn't see anything obvious until I figured out the horizontal rod must be the fuel cutoff rod, and it would not move. I tried to get it to loosen up and did get it to move, but not easily. I left it at the opposite end from where I found it, and put things back together and it started first crank, but I could not control speed or shut it down. Had to pull the fuel line to the fuel pump to kill it because it wanted to run away.

Looks like something is wrong in the governor assembly but it looks like you have to pull the whole pump and governor to get at it. I'm thinking the assembly has to go back on in the right place like a distributor on a gas engine in order to get the injector timing right, but don't have a clue how to verify that.

Is this a case of buy a new governor and pump assembly, or is the something I can do inside the governor once I get the assembly off?

 

[Bob Rooks]

Larry, with all due respect, it appears that you have little understanding of diesel engine operation. That said, I recommend that you take the fuel injection pump/governor assembly to a diesel shop, or just purchase a new one. You were extremely lucky your engine didn't "grenade" on you. Whenever any work is performed on the fuel injection pump or governor, at first startup you will have at the ready a round piece of 1/2" plywood to cover the engine air intake. Don't rely on just shutting off the fuel.
The BP Deepwater Horizon disaster was caused by a runaway diesel engine.
Diesel engine runaway - Wikipedia, the free encyclopedia

 

[Diamondpilot]

Did your pump have any oil in it? It holds about 15 to 20 oz of oil and must be changed regularly. No oil, or a lack of clean oil could cause the pump to seize like you described.

Chris