99' f450 7.3l hard starting runs fine then shut down.

[Rjames]

Hey,
I hope some one has some suggestions. The truck hardly starts but once it does it idls fine. It runs fine while driving it but once we come to a red light or stop sign it stalls,it shuts down just like if I would turn the key off. And once it's stalled it won't start up again and has to be pulled. Any suggestions??

And one question does the power stroke use 2 fuel pumps. Like a supply pump and a high pressure pump? If so where are they located. Thanks.

[bigcountrysg]

The PSD uses one fuel pump. It is located on the frame rail on the driverside. Then it uses a HPOP High Pressure Oil Pump to pressure the fuel for the injectors. Then the injectors use electric signal to spray the fuel into the cylinders.

I suggest you have the truck scanned for codes and then go from there.

[Rjames]

Thanks bigcountrysg

[bigcountrysg]

Originally Posted by Rjames

Thanks bigcountrysg

No problem man. That is why we are all here.

[Rjames]

FOUND THE PROBLEM!!! The o-rings on the outside of the injectors were in really bad shape. After we put new 0-rings on it started nicely

[vitalidle]

Glad to hear you got it figured out