Fuel delivery problem with LX279 Tractor

   / Fuel delivery problem with LX279 Tractor #1  

thebeorn

New member
Joined
Nov 16, 2020
Messages
16
Tractor
John Deere LX279 48inch
LX279 48" cutting bed tractor with 18hp water cooled Kawasaki engine.
The background
While cutting with my tractor I saw fuel leaking out of a hole in the fuel pump.
It was running fine but this is NOT good so I ordered a new fuel pump. Fuel Pump AM132715 I was surprised how cheap they are on Amazon $14!!

Did the simple replacement and mower went about 5 min before engine started to race and then died.
Restarting would turned over the staring engine but not the engine. I assumed i had a bad pump and got another. engine still wouldn't catch.
replaced the fuel filter (installed right direction) no change.
checked the fuel line from the fuel filter to fuel pump and when I sucked on the line (bleah) fuel came down it and continued as long as I kept the line lower then the filter. so I thinks its good
checked the line from fuel filter to carburetor and when turning the engine over I see no spurts of fuel coming out of the output end of the fuel pump.
(HOW does thus fuel filter work?) should I see fuel spurting when I crank the engine?
took off the carburetor fuel solenoid and fuel poured out. checked this solenoid and it was sticking so replaced it. works correctly now but still engine wont turn over.
replaced spark plugs engine won't turn over.
NOt quite sure what more I can do.... any suggestions? I think its fuel related ? seems still to be fuel pump but I've replaced it twice from different sources.
 
   / Fuel delivery problem with LX279 Tractor #2  
:welcome: to TBN

A lot going on in your post. Hope we can get it sorted out for you.

replaced spark plugs engine won't turn over
This is unrelated to your suspected fuel problem. Suggest sorting that one out first.

Battery connections cleaned on both ends of neg and pos cables. Battery load tested for condition and possible replacement.

Restarting would turned over the staring engine but not the engine. I assumed i had a bad pump and got another. engine still wouldn't catch.
Not following what happened here.

Keep feeding us info, with the hopes we can zero in on what is happening to your LX279.
 
   / Fuel delivery problem with LX279 Tractor
  • Thread Starter
#3  
:welcome: to TBN

A lot going on in your post. Hope we can get it sorted out for you.

This is unrelated to your suspected fuel problem. Suggest sorting that one out first.

Battery connections cleaned on both ends of neg and pos cables. Battery load tested for condition and possible replacement.


Not following what happened here.

Keep feeding us info, with the hopes we can zero in on what is happening to your LX279.


battery is pretty new from this season. As I test the engine ive been topping off the battery with a trickle charger. The starter is turning the engine over but its not catching and running on its own. I believe its not getting gas.

It would help to know how the fuel pump works. When I disconnect the line from the fuel pump to the carburetor and turn the engine over i see no fuel coming out of this line on the fuel pump.
 
   / Fuel delivery problem with LX279 Tractor #4  
You certainly should see the fuel spurt our from the outlet on the pump as it cranks. Assuming that you have the lines on correctly and the vent open, it should pump. Maybe the cheapo pump let you down.
 
   / Fuel delivery problem with LX279 Tractor
  • Thread Starter
#5  
IMG_0092.JPEGIMG_0093.JPEG
 
   / Fuel delivery problem with LX279 Tractor
  • Thread Starter
#6  
IMG_0093.JPEG
 
   / Fuel delivery problem with LX279 Tractor
  • Thread Starter
#7  
IMG_0091.JPEG
 
   / Fuel delivery problem with LX279 Tractor
  • Thread Starter
#8  
so this is the fuel pump I believe I have it connected correctly same as it was before and ias shown on youtube videos.
The first picture is of the back of the pump. What the spring contraption and how does it work. Im not getting any real fuel from this pump when I crank the engine.
 
   / Fuel delivery problem with LX279 Tractor #9  
If you put the supply line on and press the top fuel should come out the other fitting...Inkedfp_LI.jpg fuel pump.jpg
 
   / Fuel delivery problem with LX279 Tractor #10  
Can we assume that the little actuator rod that activates the pump is still in the block? If it ran fine before you replaced the pump, we can probably assume the cam hasn't failed.
 

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