I purchased a Deere 650G and have ran it around 3 hours and it has quit running. I pulled the fuel filter and it had quite a bit of vacuum on it. It also had lots of trash in the fuel filter. From there, I filled up a new filter with diesel and tried to crank it with no success. My question is how do I prime the system up on this model?
Loosen fuel filter plug item # 7 in the pic a couple of turns. Stroke the lever on the fuel transfer pump 5 to 10 times and bleed off any air at the plug. Tighten the plug and check if engine start. If engine doesn’t start,you may have to loosen the fuel inlet line at the injection pump and bleed the air from that line as well. .
You might want to clear the obstruction in your suction line first.
If this is a transfer pump primer lever on a diaphragm pump, then how the lever feels will tell you if it's pumping or sucking against a vacuum or all pumped up and not pumping. Disconnect the lines and make a suction with your finger to see how it makes the lever harder to pump.
Replace the fuel filter and got it cranked. It ran about 10 minutes and died again. Trash again in the fuel filter. Put 34 gallons of diesel in it yesterday. Any suggestions on what to do next?
Drain and clean the fuel tank and suction lines
Well- Finally had a chance to go work on it yesterday afternoon due to a busy weekend. Primed it up, and it cranked. It ran about 15 minutes at 3/4 idle on flat ground. I got on it, start digging up a stump and it started cutting out and finally died when I was about 30° down in a hole by a stump. Primed it again, it cranked up, and was able to move it back to flat ground. The fuel filters looked good this time with no trash in them but I did notice that the fuel primer pump was leaking. It appears that it will not hold prime on the fuel system and the reason it makes it stop running. Would the leak on the fuel primer pump make it lose prime and cause this problem? Or do I need to be looking somewhere else?
Are you reading any of these replies?
Yes- Went through all of the steps as in the replies. Have not drained the fuel tank yet. It did not seem to have as much trash in the bottom side of the filter as before. I may be fighting 2 separate problems.
Take off the fuel cap off and try again. This makes sure the tank is able to vent.
If it's losing prime while running, then most likely the fuel supply is blocked. Fuel tanks usually have a petcock drain on the bottom somewhere that you can reach if you know where it is, and the manual will say to drain water every day, have you drained anything out of there? Sometimes there is a screen inside the tank to keep stuff out of the pickup, that screen can become plugged and COLLAPSE on the intake. IF you don't have a screen in the fuel intake, then you want as large a hose as possible, like 1/2" going to a large coarse filter like a water separator with a screen, or an engine oil filter to catch the big stuff. Otherwise you basically have to remove or cut large holes in a fuel tank to get it clean, though you could get it much more reliable by draining, settling the fuel, and flushing it over and over until you don't get any more junk out. It's possible the primer pump leak has something to do with it, not likely. How about a picture? There are other possibilities like an injector leaking air, but if it runs smooth with no load, that's unlikely.
FWIW, per the online parts catalogue,there is an strainer/ filter at the fuel tank outlet . https://partscatalog.deere.com/jdrc/sidebyside/equipment/60483/referrer/navigation/pgId/402691132 . .
UPDATE: Installed the new fuel primer pump and got it running on Wednesday afternoon. It ran about 2 hours then started losing power again. It acted as if it was starving for fuel. Parked it. This morning we drained the entire tank. Filtered some of the diesel and poured through the tank again trying to get any loose particles out. Cleaned both fuel filters. Blew through fuel lines checking for obstructions. Put it all back together, 5 gallons of fresh diesel with conditioner, primed, and it cranked. Ran it about another 2-2.5 hours then it started losing power once again. I let it sit for about an hour. I then checked the sediment bowel on the bottom the fuel tank. It has very little particles in it. Replaced the spin on fuel fillter, checked the other fuel filter. Primed and it cranked. Ran for about 10 minutes then started losing power. It will idle fine- kill the engine and it will crank up immediately. I am at a loss on what to do next or what to check. When it is running correctly, it is one strong machine. There is no blow by in the engine. Any suggestions on what to do next? Thanks in Advance, CAH2873
Hopefully thepumpguysc reads the thread , he will have some words of wisdom.
It looks like that is a stanadyne injection pump, right? if so, then you could check the fuel return fitting, unscrew it from the injection pump so the injection pump is open to the inside, check inside that fitting for coffee grounds, do that right after it stalls. Blow it out, and confirm it will pass fluid, it has a glass ball that can be plugged but also be see through at the same time. Can also pull the timing window off the side with the two screws and check there for coffee grounds. Coffee grounds are a part disintegrating that needs to be replaced sooner or later, but it can run a short time for testing, etc. As far as I know, two hours is not typical for that issue, ten minutes or one minute is more typical. If there's no coffee grounds, then it sounds like you're on the right track. Keep doing it until you get the gunk out of the system. Do you have a screen on the inlet in the tank? What did it look like? Do not trust blowing air through lines to see they are not plugged, air is deceiving, you can't tell how much air is flowing from the sound, run a wire through any fittings, use a garden hose to blow through, or use the fuel flow with the primer for judging how plugged or open lines are.
Update. Pulled to 90 degree fitting on the bottom of the tank to check for trash. Very little came out. Went to the injector pump. Disconnected the fuel line on the top by the red mark. Also disconnected the return line going into the tank. Blew through it with no obstructions. Unscrewed the the fitting the bottom red line. Cleaned and reassembled all. Primed and if cranked. Tan for about 20 minutes and started acting up again and eventually died. I am stumped on what to do next. Any suggestions on where to look next? Thanks for any comments.
Have you replaced the rubber fuel lines, or just cleaned them out? Rubber lines can collapse internally and cause all sorts of mysterious fuel problems. They will blow through ok, but not allow proper flow through. I would replace every bit of rubber line in the fuel system, but that's just me.
Remove the elbow at the top red line, then remove the fitting below it, so you could stick your little finger in the top of the injection pump and fell around if you had a finger small enough. Look through that straight fitting, then force liquid through it. Did you remove the intake screen from the tank and check that? have you used the diaphragm pump priming lever to check if it's pulling a vacuum when it loses power or dies?
Update: Cleaned the elbow at the injector pump and replaced the rubber fuel lines. I also found another fuel line between the filters that was leaking. It was hard to see beside it ran inside the sheet metal. Also, repaired a couple of small leaks in the fuel lines. As of right now, it has ran close to 4 hours without any hesitation. Thanks for all of the help. I do not have another issue with it now but I am going to start another thread.
Persistence pays!