Fuel delivery problem with LX279 Tractor

[thebeorn]

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.

 

[beenthere]

: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.

 

[thebeorn]

: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.

 

[tomplum]

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.

 

[thebeorn]

 

[thebeorn]

 

[thebeorn]

 

[thebeorn]

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.

 

[Peter 315]

If you put the supply line on and press the top fuel should come out the other fitting...

 

[tomplum]

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.

 

[Peter 315]

My buddy just called me his father is having the same trouble with a kohler engine I think its a cheap china made pump it pumps fuel off the engine but not on......

 

[thebeorn]

 

[thebeorn]

the cam seems to vibrate a lot when I feed the carborator fuel line from another source and the engine runs fine. Can anyone tell me how this works what is going on? is there a vacuum in the carborator that pulling fuel? what is this cam doing? when you attach the fuel pump the spring hinge inside the back of the fuel pump is obviously pushed in. But what does this do?

 

[Richard001]

Were there any instructions that came with the pump?

You have to make sure that you don't have the in and out hoses reversed.

Try this, take the pump off of the engine, connect a hose to the in tube on the pump, put the other end of the hose in a container of fuel and operate the pump by hand. Does fuel come out of the other tube?

Richard

 

[Peter 315]

You get it running yet.........

 

[thebeorn]

I got it running by putting a hose into a gas can and sucking on the other end and then attaching it to the carburetor fuel intake connector.. Basically by passing the whole tractor fuel supply system. I did this to make sure the problem wasn't the carburetor or other parts of the engine. Its definitely a gas supply problem. I have a feeling i need to buy a more expensive fuel pump. $14 is probably too cheap:<<< but it could be the fuel lines.

 

[Peter 315]

I think the arm on the fuel pump is made wrong my buddy's tractor is doing the same thing ........

 

[thebeorn]

so no directions but youtube shows how to install it. intake at top and out on side. see pics above. I feel confident that thas right and it matches my picture of fuel pump connections that i took before touching anything.
I did take it off and I attached a hose to the in tube on the pump. I put the other end into a gas container. I pushed the spring loaded thingy that previous commenter said to press but nothing really happened. I wish I knew how this pump worked.

 

[Peter 315]

so no directions but youtube shows how to install it. intake at top and out on side. see pics above. I feel confident that thas right and it matches my picture of fuel pump connections that i took before touching anything.
I did take it off and I attached a hose to the in tube on the pump. I put the other end into a gas container. I pushed the spring loaded thingy that previous commenter said to press but nothing really happened. I wish I knew how this pump worked.

press it and keep pressing fast . in out in out in out......

 

[thebeorn]

**** these cheap pumps suck!!!! so I now have three of them!!! old one has a hole t hat leaks gas...the reason im changing it. next one had a broken spring, next one looked fine but simply didnt pump gas, final one just came in and the spring loaded thingy is totaly frozen arrgggggg.!!! ok no mow <<$20 pumps. ill buy a $50 one :<>