l2800 Fuel problem. Help please.

[mikeboggess]

Was mowing and tractor slowly lost power. After trying to restart (and failing), I ASSumed I had a fuel pump failure. Armed with my motor serial# I went to the dealer and purchased a new fuel pump and fuel/water filter.

Installed both and followed directions to purge the air by turning the release valve on the injector pump, cranking, (engine started running, rough), shut the I.P. valve and it smoothed out, ut was running weak. Gave it some fuel and it died.

That's where I am at now. I took the hose off the fuel pump that feeds the injectors and got just a dribble.

I NEED help, please! What do I do next, bleed the injector lines?

 

[old and tired]

So my train of thought goes like this... if you lose power, start with the cheapest thing and work your way up.

First is make sure the vent hole on the cap is working and not creating a vaccum...

Second check the flow from the tank to the filter, you might have algae or leaves in the tank covering the outlet... Blow air back into the tank - see if that help for a little while.

Next I would have replace or at least clean the fuel filter...

IF it's not those, then I would be checking the pump... not buying a pump, checking it to see if it works or not.

Let us know how it goes... It's very rare for the pump to quit...

 

[eserv]

So my train of thought goes like this... if you lose power, start with the cheapest thing and work your way up.

First is make sure the vent hole on the cap is working and not creating a vaccum...

Second check the flow from the tank to the filter, you might have algae or leaves in the tank covering the outlet... Blow air back into the tank - see if that help for a little while.

Next I would have replace or at least clean the fuel filter...

IF it's not those, then I would be checking the pump... not buying a pump, checking it to see if it works or not.

Let us know how it goes... It's very rare for the pump to quit...

A plugged fuel tank vent always seems to come up as a possible reason for a low fuel delivery problem. I guess it is possible alright but in over 20 years as a Kubota mechanic and almost 50 years as a farm equipment mechanic I never did run into that problem!

 

[whitetiger]

Was mowing and tractor slowly lost power. After trying to restart (and failing), I ASSumed I had a fuel pump failure. Armed with my motor serial# I went to the dealer and purchased a new fuel pump and fuel/water filter.

Installed both and followed directions to purge the air by turning the release valve on the injector pump, cranking, (engine started running, rough), shut the I.P. valve and it smoothed out, ut was running weak. Gave it some fuel and it died.

That's where I am at now. I took the hose off the fuel pump that feeds the injectors and got just a dribble.

I NEED help, please! What do I do next, bleed the injector lines?

You answered your own question, "got just a dribble".
Your fuel tank outlet or fuel hose is plugged with debris.

 

[mikeboggess]

You answered your own question, "got just a dribble".
Your fuel tank outlet or fuel hose is plugged with debris.

Thank you I will check that out and let you know what is what.

 

[mikeboggess]

So my train of thought goes like this... if you lose power, start with the cheapest thing and work your way up.

First is make sure the vent hole on the cap is working and not creating a vaccum...

Second check the flow from the tank to the filter, you might have algae or leaves in the tank covering the outlet... Blow air back into the tank - see if that help for a little while.

Next I would have replace or at least clean the fuel filter...

IF it's not those, then I would be checking the pump... not buying a pump, checking it to see if it works or not.

Let us know how it goes... It's very rare for the pump to quit...

DUH! I took an air tank, loosened the fuel cap, blew into the line and there was fuel. Thank you!

 

[mikeboggess]

Thank you I will check that out and let you know what is what.

DUH! I took an air tank, loosened the fuel cap, blew into the line and there was fuel. Thank you!

 

[mikeboggess]

You answered your own question, "got just a dribble".
Your fuel tank outlet or fuel hose is plugged with debris.

DUH! I took an air tank, loosened the fuel cap, blew into the line and there was fuel. Thank you!

 

[mikeboggess]

A plugged fuel tank vent always seems to come up as a possible reason for a low fuel delivery problem. I guess it is possible alright but in over 20 years as a Kubota mechanic and almost 50 years as a farm equipment mechanic I never did run into that problem!

DUH! I took an air tank, loosened the fuel cap, blew into the line and there was fuel. Thank you!

 

[mikeboggess]

A plugged fuel tank vent always seems to come up as a possible reason for a low fuel delivery problem. I guess it is possible alright but in over 20 years as a Kubota mechanic and almost 50 years as a farm equipment mechanic I never did run into that problem!

DUH! I took an air tank, loosened the fuel cap, blew into the line and there was fuel. Thank you!

 

[eserv]

DUH! I took an air tank, loosened the fuel cap, blew into the line and there was fuel. Thank you!

So whatever was blocking it is still floating around in the fuel tank?

 

[mikeboggess]

So my train of thought goes like this... if you lose power, start with the cheapest thing and work your way up.

First is make sure the vent hole on the cap is working and not creating a vaccum...

Second check the flow from the tank to the filter, you might have algae or leaves in the tank covering the outlet... Blow air back into the tank - see if that help for a little while.

Next I would have replace or at least clean the fuel filter...

IF it's not those, then I would be checking the pump... not buying a pump, checking it to see if it works or not.

Let us know how it goes... It's very rare for the pump to quit...

DUH! I took an air tank, loosened the fuel cap, blew into the line and there was fuel. Thank you!

 

[mikeboggess]

So whatever was blocking it is still floating around in the fuel tank?

Yes it is still there . . . . for now. Thanks!

 

[eserv]

Yes it is still there . . . . for now. Thanks!

Take a fairly large hose like a piece of heater hose, and siphon all the fuel out of the tank into a pail. If you are at all lucky, whatever was in there will come out. I have done this many times and saved myself the labour of removing the tank. If it doesn't come out the first time it is worth the time it takes to put the fuel back in and try again. move the hose around inside the tank while the fuel is coming out

 

[old and tired]

A plugged fuel tank vent always seems to come up as a possible reason for a low fuel delivery problem...

So it might not happen up in the north but we have mud dabbers and solitary bees down here in the south, that will plug outside outlets and anything else that has a small opening. Only takes a second to crack open the fuel tank to rule that out... Glad you don't have to deal with that...

 

[Pau7220]

Take a fairly large hose like a piece of heater hose, and siphon all the fuel out of the tank into a pail.

The milky white Kero-Sun squeeze style kerosene siphon pumps work well for this.

 

[eserv]

So it might not happen up in the north but we have mud dabbers and solitary bees down here in the south, that will plug outside outlets and anything else that has a small opening. Only takes a second to crack open the fuel tank to rule that out... Glad you don't have to deal with that...

That is so true! when I go to service schools I often am amazed the things people have to deal with in different parts of the country! We have to deal with 40 below temps and snowstorms but no mud-dabbers here.

 

[mikeboggess]

Take a fairly large hose like a piece of heater hose, and siphon all the fuel out of the tank into a pail. If you are at all lucky, whatever was in there will come out. I have done this many times and saved myself the labour of removing the tank. If it doesn't come out the first time it is worth the time it takes to put the fuel back in and try again. move the hose around inside the tank while the fuel is coming out

I will give that a try and get back to you. Thank you for your response.

 

[mikeboggess]

So my train of thought goes like this... if you lose power, start with the cheapest thing and work your way up.

First is make sure the vent hole on the cap is working and not creating a vaccum...

Second check the flow from the tank to the filter, you might have algae or leaves in the tank covering the outlet... Blow air back into the tank - see if that help for a little while.

Next I would have replace or at least clean the fuel filter...

IF it's not those, then I would be checking the pump... not buying a pump, checking it to see if it works or not.

Let us know how it goes... It's very rare for the pump to quit...

It was trash in the line. Thank you for your response.

 

[mikeboggess]

Take a fairly large hose like a piece of heater hose, and siphon all the fuel out of the tank into a pail. If you are at all lucky, whatever was in there will come out. I have done this many times and saved myself the labour of removing the tank. If it doesn't come out the first time it is worth the time it takes to put the fuel back in and try again. move the hose around inside the tank while the fuel is coming out

OK, did the drain and fill, used a 10 gal. white bucket so any debris would be visible, got some but not much. Mowed for two hours, no problems. Thank you for your help.