i have a 7.3 thats only starts when its been pluged up .it has new glow plug in it , if i dont it will only run on 5 cylinders thay say i need new injectors . will new o rings fix it , the truck works good after it runs awhile

 

how is the GPR? the running on 5 cylinders could be wiring. most likely the UVCH. how many miles on it?

 

I don't think it is a wiring issue because when it set over night they say that the injectors are leaking into the cylinders. Once it is running and I am going down the street it clears it self out and it runs like new. It has 249K miles on it. My question is will new o-ring stop the injectors from leaking fuel into the cylinders?

 

i'm not going to say yes, but they wouldn't hurt. do all 8 injectors

 

I doubt orings are your only problem... Sounds like an actual injector issue...