timberjack 360 isnt running right

[timberjack97]

hello my timberjack is a 97  I m pretty sure the problem is fuel related did anybody ever have any trouble with the electric fuel shut off sellanoid 

[timberjack97]

no the enginie doesn't rev up then

[Firewoodjoe]

Prior to getting the second engine the first had low end but no top end and we were told it was the injector pump. But it had gobs of hours and we just did a complete crate engine. Pump and all. My dads dodge had the 5.9 and the plastic line going to the turbo melted and lost power fast. Idk

[Mark K]

Might have been cheaper to call a mechanic then have all this downtime. I turn my own wrenches but if I cant figure it out quickly im not affraid to call somebody. If your primer pump is putting out fuel and you are getting good fuel flow to your injection pump then I think you've found your culprit.

[Dave Shepard]

There are just too many different things that can cause problems that one really needs to be able to lay their hands on the thing to diagnose it. If it's not making boost, it would not make power either, even if the fuel system was up to snuff. I had a clamp fall off of an after cooler line on our dump truck this winter. It acted like a seriously plogged fuel filter. As I was sitting in the cab with the hood up revving the engine after I put new filters in, I saw the hose expand every time I revved the engine. A new clamp and the truck was running better than it had in years. :D

[bushmechanic]

 Yes timberjack97 I have had problems with the fuel shut-off solenoids. On that year of machine you should be able the tie the shut-off lever open and that will keep the shut-off from falling down into the stop position. Just remember to let go the tie or it won't shut off. On the timberjack harvesters there is a emergency fuel cut-off that cuts the fuel if the machine is burning so as not to keep fuel to a fire. You can take it apart and clean it or try any bypass it in order to see if that's your issue, and it is solenoid powered valve so you might have a bad solenoid or an electrical problem to it. 

[kiko]

I think some progress has been made so I will check back in.  The lift pump supplies the injection pump and does so by maintaining pressure within the injector pump housing it's self, thus forcing fuel into the pump chambers when they come open. To maintain this pressure with in the pump housing a pump ( lift pump) and a pressure regulator a required. The pressure regulator is made into the banjo fitting where the fuel return line hooks to the injection pump. This regulator is simple ball poppet valve. If this valve is has failed the lift pressure will never build and result in a no smoke engine pull down. This valve can be removed and easily disassembled to inspect. I have seen these where the ball poppet is gone.  Where to?.  On the fuel line leaving the fuel filter there is a bleeder screw made into the banjo fitting. 10 mm wrench to remove. I take the banjo fitting and braze a 4mj-2mp to the banjo where the bleeder screw and washer has been removed.  It can the be capped with jic 4 cap. Now you have a fuel pressure check point. Lift pressure should be around 20 psi.  If you don't want to go through all this, with the engine off pump the lift pump at some point you should hear a small squeal as the poppet comes off its seat, if you never hear this squeal the valve is defective. All this is assuming it has an inline injection pump rather than a rotary pump. The 360 came with both depending on production date.
.

[timberjack97]

my timberjack is a 1997

[kiko]

Yea , got that. Does it have an inline injection pump, or a rotary pump?

[timberjack97]

how do I tell the difference between the two pumps

[OntarioAl]

One looks like an inline 6 cylinder engine the other looks like a rotary engine with all the lines on the same plain.
Al

[Dave Shepard]

An inline pump will have all six injector lines in a row. The rotary pump has them in a circle around the end of the pump.

[tj240]

a friend of mine ran one and they had to change the computer or ecm not sure of the name. then another i know had to change the throrrle pedal because theirs was electric not sure of yours but the computer problem effected alot of the 360. real pulling machine when they work.