Fuel delivery problem with LX279 Tractor
- Thread starter thebeorn
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- john deere lx279
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
Veteran Member
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
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
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.
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.
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
Super Member
press it and keep pressing fast . in out in out in out......
**** 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 :<>
