i recently got a 94 f250 7.3 powerstroke 4x4 5spd. it has started loosing ALOT of oil. it smokes some mostly when cold. i replaced the crank case breather ($200) and rebuilt the turbo and added a whicked wheel (approx $250) and still uses 4-5 quarts in 30miles or so. im new to the diesel world so not sure what it could be. there is no drips that amount to anything. i have been reading and think it may be injector o rings but shouldnt i have power loss if this is true? there is some oil on oil pan but only enuff to leave quarter size spot when sitting for a day or more but thats it. please help, thanks

 

yes you could be pumping your high pressure oil through an o-ring on an injector, or even through your injector. at wot, you are pushing 2500 psi oil pressure through your injectors, and only up to 70 psi fuel. Pull your lid on your fuel filter and see how black your fuel is. This would be a sure sign you need some new o-rings on your injectors. PITA little project there, but not too difficult. Just a few things to know about pulling injectors out of these.

 

You would not be losing that much oil through the injector orings without having a huge pile of other problems.... 4-5qts in 30 miles is way too much...

Turn the engine on and find where it is leaking...

 

Is there any oil in the coolent? How does the tail pipe look? And the the wicked wheel is the stock turbo wheel from the OBS.

 

its not leaking out anywhere i can find.

---AutoMerged DoublePost---

no oil in coolant, pipes look the same as they did when they were on my gasser, i know wicked wheel is stock i was just sayin what i had spent money on while tryin to fix this problem, figured i had the turbo apart so might as well change it

---AutoMerged DoublePost---

what other problems would i be having?

 

You put pipes from a gasser on a diesel?

 

they are 5" stacks. i had um on my old flatbed with a 351m, its in the scrap yard now and the stacks are on my 7.3

 

i pulled fuel filter and it has as much oil as diesel. so i guess its new o rings. anyone have any tips on changin them? or maybe a series of pics? ive never messed with them before so any help would be great.