'81 F2 fuel restriction

[pea_grower]

Cutting wheat, had a light indicating fuel restriction. It was supposed to rain, and I wanted to get the wheat off the machine. Got it over to a gravity wagon, unloaded, throttled back and that was it.

Restriction seemed to be in the fuel line. Replaced filter, filled the fuel tank, gravity filled the filter. Used the hand pump but fuel went everywhere. Not sure I'm getting fuel to the injection pump. Not getting any fuel out the top when I break lines loose and crank. Injection pump was overhauled 14 years ago.

Could the fuel restriction cause injector pump failure? Will a full fuel tank push fuel to the pump to pick up? Got any thoughts?

 

[roper4570]

Try by-passing the priming pump. Have replaced many of those as they start sucking air or internal check valve is bad or has trash in it.

 

[Skyhighballoon(MO)]

Cutting wheat, had a light indicating fuel restriction. It was supposed to rain, and I wanted to get the wheat off the machine. Got it over to a gravity wagon, unloaded, throttled back and that was it.

Restriction seemed to be in the fuel line. Replaced filter, filled the fuel tank, gravity filled the filter. Used the hand pump but fuel went everywhere. Not sure I'm getting fuel to the injection pump. Not getting any fuel out the top when I break lines loose and crank. Injection pump was overhauled 14 years ago.

Could the fuel restriction cause injector pump failure? Will a full fuel tank push fuel to the pump to pick up? Got any thoughts?

I have a 1981 F2. I have had that exact same issue numerous times in the past. For me it had nothing to do with the primer, fuel filter or injection pump. This issue for me was the sediment bowl on the right rear where fuel comes from the tank. I think my combine had algae in the fuel when I got it. Several does of algae killer I think got it but I get these little black blobs that clog the inlet into the glass sediment bowl. When you remove the glass bowl (assuming you have one), do you get two big streams of fuel coming out of the inlet? If you don't, that you got gunk clogged there restricting flow. A wire or small plastic zip tie poking up each side usually gets it going for a while. But it's the design of the restriction with those two slits on each side of the inlet that catches the gunk coming out of the tank that the fuel filter is going to easily catch anyway. Drill out bigger the two slits on each side of the inlet or just cut off that part of the inlet pipe with the two slits so you have larger inlet to the glass bowl that doesn't catch junk. When I did that, the problem went away for good.

 

[rrlund]

I had a kernel of corn in the tank one time that got down in the stem of the sediment bowl assembly and partially plugged it. It was good until it got under load.

 

[paul]

Had the sediment bowl screen plug badly on a F2 I bought, they put old bad fuel in it before taking it to the auction. Was a bad deal, I drove it home 45 miles and had to stop and clear the screen about 5 times, the. It was a mess getting it going when home. Blah.

Paul

 

[big orange]

Does the combine have a filter in the bottom of the tank?

 

[DrAllis]

I think an 81 model should have. If you can get your forearm into the fuel tank reach all the way to the bottom to see if it is still in there. Pull it out and clean it.

 

[the tractior vet]

Cutting wheat, had a light indicating fuel restriction. It was supposed to rain, and I wanted to get the wheat off the machine. Got it over to a gravity wagon, unloaded, throttled back and that was it.

Restriction seemed to be in the fuel line. Replaced filter, filled the fuel tank, gravity filled the filter. Used the hand pump but fuel went everywhere. Not sure I'm getting fuel to the injection pump. Not getting any fuel out the top when I break lines loose and crank. Injection pump was overhauled 14 years ago.

Could the fuel restriction cause injector pump failure? Will a full fuel tank push fuel to the pump to pick up? Got any thoughts?

What i have found several times on combines that did a lot of beans that bean dust gets sucked into the fuel tank and clogs the strainer . Now i am no expert on Gleaners and i don't know if they have the long cone shaped strainer in there tanks . the one 750 Massey silver cab i sold to a friend did this and yup while doing wheat . He bought it off me at corn shelling and i went up and set and showed him how to do the set ups and adjustment and ran the first fifty acres and it ran great , went up first part of July and put the grain head on and did the set up and went to the filed and like always at the far end of the field she died starving four fuel . I pulled the strainer out the bottom and plugged the hole with my thumb while i cleaned the screen with one hand and when i removed my thumb all of a sudden the fuel just stopped . Went to poken and open 1/2 pipe thread hole and chunks of hard packed bean dust started coming out . Must have lost ten gallon of fuel before i got the fitting back up and in . Made it back around to the shed and we drained the tank and found over a foot of built up hard as a rock bean dust . And the clean out ate up the rest of the day. Between long pry bar shop vac blow gun and hot water pressure washer we got it clean out and issue solved. Next thing to check is tank vent and like i said i am no expert on Gleaners so check for a lift pump as it may have and electric lift pump of engine driven pump , check fuel filters blow lines out . Good luck. They never break down setting in the barn.

 

[paul]

There should be a little stand up screen in the tank as several of you suggest and certainly worth checking, visible if the fuel is low in the tank pretty much straight down from the fill hole.

But the first real restriction is usually the sediment bowl on the right side of the machine below the tank, the fine screen in it will plug up pretty easy. This screen is finer and a small disc, collects more junk faster.

Paul