My 99 powerstroke just went from using a quart of oil every 1000 miles to using 3 gallons every 6 miles!!! This happened in about 75 miles of driving or less. There are no drips and no oil coming out of the tail pipe. The intake side of the turbo is oily but not too bad. I have not checked the exhaust side. The fuel in the filter bowl seems to be oily and very black. The exhaust is blue and smells like oil but you can see through it. The fuel guage seems to be rising. Any ideas. When to truck is warm it seems to run fine and have all the power it had before eating all the oil.

 

Bad hpop or turbo. Any oil leaking in the valley?

 

The valley is dirty but there is no wet oil in it. Can the HPOP leak oil into the fuel bowl? There is no oil leaking out of the engine onto the ground.

 

might also be a main seal leaking are you noticing any smoke? it sounds like its eating/ burning off the oil

 

Could be. I had one suggestion that the O rings on 1 or more injectors had failed and the fuel return was picking up the head oil and sending it to the fuel tanks. Seems to explain what is happening. Has anyone heard of or experienced this? Do I upgrade turbo and injectors now or go stock till I know the block is good?

 

Injector O rings...

Fuel pressure is 40-70psi...

HPOP min is 300psi...

Your oil is going into your fuel... Makes for great MPG, but horrable for injectors.

Remove your injectors, send them somewhere to be checked and replace the O rings.

 

That explains it. Thank you. Saved me a bunch of time and effort figuring it out.