2820d fuel injection line leak

[Bill.S-HT]

My tractor experienced a sudden loss of power while snowblowing. Upon opening the hood I noticed fuel leaking from the injector fuel line where it connects to the injector (rear cylinder #3?).

I removed and cleaned the injector which helped the engine run better but I still have the fuel leak. I ordered a new nozzle assembly thinking there may have been an problem with the old assembly. However the problem persists with the new nozzle assembly.

The fuel line appears to be OK. It seats cleanly. I have removed and reinstalled the nut numerous times to torque specs and beyond specs with no change. I know there is 3k psi on that line but I’m having a hard time accepting that the fuel line is the problem.

I’ve bled the system thoroughly. It starts easily. Neither of the other 2 cylinders have this issue.

Any suggestions?

 

[winston-HT]

Makes no difference with your problem but rear cylinder is actually #1. Not fully understanding about new nozzle and leak. If I am understanding correctly you are saying the leak is where the injector lines connects to the injector. If that is the case then the fault has to lie in the line or the seat on the injector. Either that or nut is not fully tightening.

 

[Bill.S-HT]

<QUOTE author="Bill.S"><s>

</s>My tractor experienced a sudden loss of power while snowblowing. Upon opening the hood I noticed fuel leaking from the injector fuel line where it connects to the injector (rear cylinder #3?).

I removed and cleaned the injector which helped the engine run better but I still have the fuel leak. I ordered a new nozzle assembly thinking there may have been an problem with the old assembly. However the problem persists with the new nozzle assembly.

The fuel line appears to be OK. It seats cleanly. I have removed and reinstalled the nut numerous times to torque specs and beyond specs with no change. I know there is 3k psi on that line but I’m having a hard time accepting that the fuel line is the problem.

I’ve bled the system thoroughly. It starts easily. Neither of the other 2 cylinders have this issue.

Any suggestions?<e>

/e></QUOTE>


Totally new to forum replies.. not sure how to respond to your reply.

Thanks for the clarification on cylinder numbering..

I assumed the cylinder closest to the fan was the number one. I did notice that the marine diagrams for the 3gm (marine version of the 3T84) listed the cylinders 3,2,1 front to back).

My research suggests the following part numbers for the Pipe Assembly, Injection: 128390-59810 for cyl 1, 128390-59820 for cyl 2, 128390-59830 for cyl 3.

Weingartz has them in stock.

Thanks for your help.

 

[winston-HT]

Please let us know your outcome.