Bobcat 864 fuel system,no ball pressure.

[SteveinNC]

the contacts on the fuel soleoud relay check those
if not by pass it with a paper clip

I got to find where the relays are at.

 

[SteveinNC]

could be your fuep pump leaking pput a etric fuel pump on should
solve you issue i did that works fine i own three machinis

I've got a electric fuel pump but I'm not sure where the wires are or how to connect them.

 

[polishpete]

u have put the pum in two wires black is ground to the frame other one
is hot to red with a on and off switch or find a fuse thats hot with key on stick it in therir

 

[polishpete]

i dont know history did it run before what happen

 

[SteveinNC]

could be your fuep pump leaking pput a etric fuel pump on should
solve you issue i did that works fine i own three machinis

I've got an electric fuel pump but not sure how to connect it.

 

[SteveinNC]

i dont know history did it run before what happen

Yes it did,had it for a few years.

 

[SteveinNC]

u have put the pum in two wires black is ground to the frame other one
is hot to red with a on and off switch or find a fuse thats hot with key on stick it in therir

Will give that a try, thanks!

 

[Tazza]

The fuel rack must move, it sounds to me that your pumps are stuck in the no fuel delivery position.

These engines run 4 injector pumps, for one to be bad is a possibility, but all 4, it has to be a common issue, and i'd suspect the throttle control to the pumps.

As i mentioned, i have never worked on one, but i do know there is a rack that joins all 4 injectors together. It's possible one injector is stuck, making none move. I also don't know how the fuel shut off solenoid works, but with it removed, you should be able to move the part it pushes on and it will move, the solenoid will push it in one direction to shut the fuel off.

I hope some of that makes sense.

The mechanic we have that works on these engines is not back till the first week of January, if we don't make progress in here, i can always hit him up for you when he is back

 

[SteveinNC]

The fuel rack must move, it sounds to me that your pumps are stuck in the no fuel delivery position.

These engines run 4 injector pumps, for one to be bad is a possibility, but all 4, it has to be a common issue, and i'd suspect the throttle control to the pumps.

As i mentioned, i have never worked on one, but i do know there is a rack that joins all 4 injectors together. It's possible one injector is stuck, making none move. I also don't know how the fuel shut off solenoid works, but with it removed, you should be able to move the part it pushes on and it will move, the solenoid will push it in one direction to shut the fuel off.

I hope some of that makes sense.

The mechanic we have that works on these engines is not back till the first week of January, if we don't make progress in here, i can always hit him up for you when he is back

Thanks for your reply! If you could contact your mechanic after he gets back than that would be great, thanks!

 

[polishpete]

i dont get it your rack opens u say u get fuel to the injectors cranks normal u must
have codes whats the code

 

[SteveinNC]

i dont get it your rack opens u say u get fuel to the injectors cranks normal u must
have codes whats the code

Checked it earlier,no error code.

 

[polishpete]

WELL the oly thinh i could think of is u have air in the system vrything chercks
out ok rack opens cranks fuel enters etc if it starts a little with either than its a fuel issue
if nothin than its electrical best bet ebectric fuel pump and crack loose a injector

 

[oiu789]

Keep us informed on what you find!

 

[oiu789]

Does the primer bulb squeeze up and get hard? I not disconnect the out and plug it and try to pump it up it should get hard if not there something wrong between it and the tank pick up. You could try the little blue pill! Just kidding! If it gets hard re hook it up and do the as above the out let of the filter then the out put of the lift pump. If it gets hard when the lift pump is out put is plunged then there must be something wrong in the injection pump IE stuck rack closed or fuel bleeding back to return or going into crank case. You could remove the return line from the injection pump a squeeze the bulb to see if it is returning a lot.