Bad Injector?

[brendanmitchell]

Ok, guys, it's been a while since I've posted on here, but I finally had my truck looked at by an actual Ford diesel mechanic. I put on a new oil filter, and did my own oil change (Rotella 15w40), we started it up with it hooked up to his computer, and noticed that it was burning a decent amount of oil. At that same time, a misfire or something showed up in cylinder number 5. So, he was thinking that it could be a bad o-ring, bad injector, or in the worse case scenario, a hole somewhere causing the oil to leak into the fuel system? I got ahold of another mechanic who said that he was pretty positive that it was a bad injector on cylinder 5. Have any of you guys ever had this problem, and what were the symptoms you had? It's causing mine to have a delay in the start/hard start depending on temperatures outside. Do you guys think I should just go ahead and buy a new injector, and have it put in, or should I sell the truck? I'd love to get it fixed up, because it's a 99 and has a lot of potential. If you need more info just go ahead and ask me.

[CowboyCody]

how many miles are on the truck? injector o ring failure is something that does happen on these trucks. i would just try and fix it if it was me, if you dump it and buy something else you could just end up with someone elses headache.

[brendanmitchell]

Originally Posted by CowboyCody

how many miles are on the truck? injector o ring failure is something that does happen on these trucks. i would just try and fix it if it was me, if you dump it and buy something else you could just end up with someone elses headache.

The truck has 250k miles, but the motor only has 40k. I can't decide what I want to do with it. Is burning oil a symptom of a bad injector or injector o-ring?

[CowboyCody]

thats pretty low miles for a 7.3 it could have sat around long enough to let the rubber o rings get brittle. if you have a bad o ring, oil can leak into the fuel which makes it hard to detect.

[brendanmitchell]

Originally Posted by CowboyCody

thats pretty low miles for a 7.3 it could have sat around long enough to let the rubber o rings get brittle. if you have a bad o ring, oil can leak into the fuel which makes it hard to detect.

That's what I was told. Just not sure if I can pinpoint it without taking it to a dealer or mechanic.

[CowboyCody]

If it is dumping enough oil I think you can start to see it in the fuel filter bowl, maybe take some out and put it in a glass jar so you can see it good. If it has a dark color there could be oil in it. I'm just grasping at straws here, I'm no expert. Hopefully someone with first hand experience will chime in.

[brendanmitchell]

I hope so, too. Thank you, though.