M35A2 not starting

[Tanker1949]

I got an M35 a2 that is a current no start. Just finished replacing all the fuel filters and bypassing the FDC. I'm not getting any fuel to the injectors except for maybe a dribble occasionally. I do have a functioning in tank lift pump. The fuel is going straight to the return system and not going into the hydraulic head is my hydraulic head bad?

 

[glcaines]

I got an M35 a2 that is a current no start. Just finished replacing all the fuel filters and bypassing the FDC. I'm not getting any fuel to the injectors except for maybe a dribble occasionally. I do have a functioning in tank lift pump. The fuel is going straight to the return system and not going into the hydraulic head is my hydraulic head bad?

You stated that it is a current no start. Does that mean it started and ran prior to you replacing the fuel filters and bypassing the FDC? If that is the case, I suspect you have air in the lines or didn't bypass the FDC correctly.

 

[Tanker1949]

You stated that it is a current no start. Does that mean it started and ran prior to you replacing the fuel filters and bypassing the FDC? If that is the case, I suspect you have air in the lines or didn't bypass the FDC correctly.

I purchased this truck in November after it had set for 15. This truck hasn't run since it was parked in 2011.

 

[cattlerepairman]

If you want a step by step no start troubleshooting guide:
TM 9-2320-209-20-2-1 Start at page 25-1

Common issues are: stuck shutoff lever (behind the small cover), especially when the truck was parked with the shutoff pulled.
"Button" fell off the hydraulic head

Assumption is that, with the in tank fuel pump running, you get fuel at the secondary filters when you crack the pipe plug.

Good luck.

 

[Tanker1949]

Update I'm now getting just small dribbles out of the injector lines. I've got good fuel from tank all the way to injector pump.

 

[fsearls92]

Is your pump is putting out enough pressure? Have you tried to pressurize the tank?

 

[Tanker1949]

Is your pump is putting out enough pressure? Have you tried to pressurize the tank?

When I open the bleeder on the secondary and final fuel filter issues a geyser of diesel 4 in straight up

 

[fsearls92]

Sounds like it’s working. Check the button on the hydraulic head to see if it is still intact.

 

[Tanker1949]

Sounds like it’s working. Check the button on the hydraulic head to see if it is still intact.

Is there any way to do that without pulling the hydraulic head?

 

[fsearls92]

Have to pull the HH off to get to it.