k0ua
Epic Contributor
Aha. but the question, is now.. OK what was in that line that is now in your tank, and how long before it finds its way back into the line and stops it up again...
L3800 Died..Help
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Aha. but the question, is now.. OK what was in that line that is now in your tank, and how long before it finds its way back into the line and stops it up again...
OP
lzicc
Platinum Member
That's my concern also. Could it have been sludge maybe?
k0ua
Epic Contributor
Perhaps, and when you mixed it back more into solution with the fuel, by blowing air in it, the fuel filter will catch it. That is scenario number 1.
. Scenario number 2:. It is something solid (an acorn for all I know), and sooner or later it will clog in inlet again?.
I just don't know.PuckNPirate
New member
I have seen several post on this forum and others and just recently experienced this myself with fuel / pump issue on my L3800. I realize you may have already figured out your issue but i wanted to post this somewhere others might find when searching for an answer.
My tractor would act as though it was starving for fuel or had air / water in the lines. Would run fine for 15 minutes, sit and idle just fine but if i throttled it up for a few minutes it would start to stall and bog down. and then resume to normal idle. Sometimes i could use it for an hour before the symptons would appear. All indications that i had something in my fuel tank blocking the fuel from exiting. First i drained the fuel tank completely, blew compressed air through the tank to get everything out. All was clean. Fuel flowed freely from the hose to the filter. No issue
Checked for water in my fuel. All was clean.
Checked all of my fuel lines, all were clean. I have heard of the inside of the hose failing before, where it can make a flap on the inside and not allow fuel to pass.
Changed fuel filter, cleaned out bowl (wasn't in bad shape to begin with) but eliminating all possibility. O-rings were in good shape on the filter.
Took the fuel filter housing off and checked ports in the plastic housing. All was clean.
Next i went to my fuel pump, with the engine off, removed the fuel hose that goes to the injectors. Turn the engine over a time or two and stand clear. This should blow fuel out. Should not just leak out as the engine turns over.
Here's my problem. The more fuel i had in my tank the more pressure i had. My pump was broke. There was enough pressure and suction from the injector pumps to keep my tractor idle until it came under a higher rpm and needed more fuel. Resulting in it stalling until it could catch up. I took the pump off (mechanical) and you could tell it did not have an suction when you put your finger tips over it. Ordered a new one with a new gasket, installed in about 10 mins. Tractor fired right up with bleeder screw open. Closed the bleeder screw after about 20 sec. Hasn't missed a beat yet.
It is not typical that your fuel pump go out as early as mine (150hrs) did but i believe that mine was a result of fuel gelled inside during the winter and could have messed up the diaphram inside. I plan to cut it open in the next few days to see what it looks like.
I hope this is helpful to anyone that runs into the same issue.
My tractor would act as though it was starving for fuel or had air / water in the lines. Would run fine for 15 minutes, sit and idle just fine but if i throttled it up for a few minutes it would start to stall and bog down. and then resume to normal idle. Sometimes i could use it for an hour before the symptons would appear. All indications that i had something in my fuel tank blocking the fuel from exiting. First i drained the fuel tank completely, blew compressed air through the tank to get everything out. All was clean. Fuel flowed freely from the hose to the filter. No issue
Checked for water in my fuel. All was clean.
Checked all of my fuel lines, all were clean. I have heard of the inside of the hose failing before, where it can make a flap on the inside and not allow fuel to pass.
Changed fuel filter, cleaned out bowl (wasn't in bad shape to begin with) but eliminating all possibility. O-rings were in good shape on the filter.
Took the fuel filter housing off and checked ports in the plastic housing. All was clean.
Next i went to my fuel pump, with the engine off, removed the fuel hose that goes to the injectors. Turn the engine over a time or two and stand clear. This should blow fuel out. Should not just leak out as the engine turns over.
Here's my problem. The more fuel i had in my tank the more pressure i had. My pump was broke. There was enough pressure and suction from the injector pumps to keep my tractor idle until it came under a higher rpm and needed more fuel. Resulting in it stalling until it could catch up. I took the pump off (mechanical) and you could tell it did not have an suction when you put your finger tips over it. Ordered a new one with a new gasket, installed in about 10 mins. Tractor fired right up with bleeder screw open. Closed the bleeder screw after about 20 sec. Hasn't missed a beat yet.
It is not typical that your fuel pump go out as early as mine (150hrs) did but i believe that mine was a result of fuel gelled inside during the winter and could have messed up the diaphram inside. I plan to cut it open in the next few days to see what it looks like.
I hope this is helpful to anyone that runs into the same issue.
ultrarunner
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k0ua
Epic Contributor
OK just to be clear you replaced the fuel feed pump, sometimes called the fuel lift pump, that is after the fuel filter and bowl but before the high pressure fuel injector pump correct?
PuckNPirate
New member
Correct.
