This past weekend I was out mowing and pulled into a gas station to get a drink. Came out Crank the truck up and I could tell it was starting to miss just a touch. Nothing a high idle wouldn't take care of. The longer I sat there the rougher it got. Figured I'd try to make it home so I could work on it at the house. Pulled out of the parking lot and it got worse. It ended up dieing on me and I made it into a parking lot. Started looking around Found both driver side UVCH plugs to have a burnt GP port and the rear passenger side to maybe have a slight burnt GP port.

Climb back in the truck and realized I was on my rear tank in which the fuel level sensor is off as I thought I had a 1/4 of tank left but it is empty at that point. Figured burnt GP ports wouldn't make the truck run bad. So I ran a jumper from my fuel pump to the battery and re-primed the system. Still no start.

Finally get the truck home and start tearing into it. And found this on on the rear passenger side.



The wires going to the harness that fed the fuel bowel and IPR? where the same way. And the one going to the sensor on the top passenger side of the HPOP is kinda the same way but not touching.

Got the UVCH changed out too new ones with all new pig tails coming off the main harness. Fire the truck off and I could tell it still had a slight miss too. Smoking white/blue out the tail pipe. Run a Buzz test on it and all is fine. Run a Cylinder test on it and come back with P-0275: Cylinder 5 Injector contribution / Balance fault.

Tore back into the harness today to check everything out and even re-terminated the wire going to number 5. Get the truck back up to temp and same code and still missing and same smoke.......

Injector is pumping oil.

What else can I do? Where should I start?

 

Seems like everyone's ucvh is melting right now.
Wish I could help but here's a bump.

 

You could swap the solenoids on that one and a different one and see if the problem moves with it. You could do the same thing with the injectors themselves.

 

I'll probably swap it with another one when I get a chance. I'm just tied up for rest of the week into next. Glad I got my project car up and running so I have something to drive.

Is there anyway to test an Injector out of the truck without sending it off?

 

No, there isn't.