fuel dumping out of turbo
 

i bought a 94 1/2 f350 yesterday(first year of powerstroke) i was told it had a blown turbo by the PO i bought it from. i had the truck towed to my house and started looking at it to fix, i found the turbo is in great condition, what i was told was oil spraying is diesel fuel spraying from the turbo/exhaust down pipe joint. the only way i can figure fuel getting to the exhaust side of the turbo is if a cylinder is loading up and fuel is getting blown out of the exhaust.. also the engine is really hard to start, idles great once it starts but doesn't rev up very good,and the oil is 2 inches high on the dipstick..
does it sound like i have a loose injector or need replacement o-rings or??? how could the engine load up like that?
my buddy that is a professional auto mechanic told me the engine must have a dropped exhaust valve letting the injector run overtime and filling the engine up with fuel, i don't think he really knows much about powerstroke diesels so i'm looking for a second opinion on that..
im hoping someone here can help,i have been wrenching all my life but diesels are new to me

.. by the way, Hi im Jim.. im new here from Ohio..looking forward to making new friends and learning a lot from this site..

it could be a cracked injector cup and/ or bad injector o rings. but that would have to be a ton of fuel to not be burning to be pouring out of the exhaust. i'd check into cups and o rings. i'd do a compression test too.

I would be double checking to make sure it's fuel and that it is actually coming through the turbo... Seems to me that is a long distance to go for raw fuel...

truly sounds to me like a bad exhaust turbine side seal in the turbo, that would blow a lot of oil into the exhaust. a rebuild kit is only $50. But that doesn't explain the dipstick now does it... maybe you have a 2fer. could be some bad injector o-rings too. not to mention, and someone correct me if I am wrong, but there is really not enough fuel pressure to get that much raw fuel to the exhaust, just based on how these goofy a$$ huei injectors are put together. experience tells me that oil/fuel spewing out of the exhaust joint can only be the turbine seal.

i defenatly have a lot of fuel pouring out of the turbo exhaust outlet. it looks black from washing out all the soot,but it is thin and not oily at all.once the truck runs a few seconds you get clear diesel pouring out...i thought it was coming from the pump below the turbo, when i fired it up and looked,i get a stream running down from the turbo, not spraying up..the injectors were supposedly just changed before the truck broke down.i have read that the injector hold down bolts can vibrate out and the injectors blow out and dump everything..this truck has been started 5 times for seconds in the last few days,it sat for 4 months before that...
the story i got is the PO bought this truck from the original owner,a 70yo man from Florida. he had the truck for a few months,did a lot of repairs, tires, brakes, clutch, starter, batterys, injectors... he was driving and lost power and went through a 1/4 tank of fuel in no time,
a diesel turbo shop said the turbo is blown and it is blowing oil everywhere,but no metal was blown into the engine.the PO found a used replacement turbo but had no idea how to change it,so it sat for 4 months till i made him an offer for the truck..
if the same shop installed the injectors that diagnosed the turbo,that might be the biggest problem.. i am planing on pulling the valve covers tomorrow to get a look at it, and take a compression test on the cylinders.i'm betting i will find an injector not bolted down..

I'm not sure how the fuel is getting into the turbo though... It would have to go through the cylinder, through the exhaust manifold and up the uppipes to get out the turbo... It wouldn't be a fluid at that point...

I have a feeling it is oil as the turbo uses oil. I think Crazycooter is on to something...

i pulled the drivers side valve cover tonite..3 of the 4 injector hold downs were barely finger tight. i bet the passenger side is just as bad..i'm hoping an o ring kit and oil change will take care of it..
i got to drive the truck for the first time today, around my yard, back to the garage to work on it..i tightened the exhaust down pipe clamp first, to minimize the fuel leaking. i had a huge cloud of white smoke

is there a way to test, or have the injectors tested while they are out to be sure they are not stuck open? can the international dealer down the street do it reasonably?

Injectors can be flow tested... Not sure if the IH dealer can do it, but a vendor like Rosewood can test them...

STOP DRIVING IT!!!

If it truely has bad injector O rings and coppers they will leak into the crank case, causing bearing damage, cylinder and piston damage. STOP DRIVING IT!!!


Replace the injector O rings and coppers and go from there.

I have seen raw fuel POURING out of the tail pipe on a 2001 PSD... it was before your time but used to be great forum fotter. Good old Andrew.:argh:

Where does it come from?

He installed new injectors and (Its been years so I cant recall for sure) didnt install O rings on the injectors or didnt install them all...

What amazed us all is the truck would even start! But it had fuel running out of the exhaust pipe.

Same guy that left a rag in his turbo intake and found pieces of it in the intercooler!:nope:

i think i got the truck fixed today. i decided i should replace the injector o rings to rule that out,plus an international dealer suggested i might have a cracked/broke injector nozzle.. i found 6 of the 8 injector hold downs were loose, on cylinder 3 the brass ring on the bottom of the injector was not in there and the o rings were burnt up, on cylinder 4 only half of the brass ring was there.both injector ends were covered in carbon..i inspected the injectors and found no cracks or damage, cleaned everything up and put 8 new sets of o rings on the injectors. i replaced 5 dead glow plugs..the truck seams pretty good now. it did have a lot of white smoke and really hard start at first, but it cleared up with a drive..the oil level stayed the same..the truck seams to get pretty bad fuel mileage,i drove 10-15 miles,the fuel gauge dropped almost a 1/4 a tank (it might of just settled or something??)

i bet you still have problems. change the oil too.

i changed the oil when i changed the o rings. it was a gallon over full with fuel

if the white smoke doesn't clear up pretty soon after startup, then you should have saved your time and money on the orings and just done a set of budget injectors instead. Also, you might get a contribution test done on her before you drive too much on it. you could have a bad couple of injectors just from having carboned up nozzles from the other probs you found.:argh: These things are soooooo simple, yet sooooo overly complicated.

the truck fires up and runs great now..no smoke at all

when i replaced the injectors in my 94 it smoked white for a little bit and i thought i did something wrong. but it cleared up. now it runs better than ever.

not a disel
 

much about powerstroke diesels so i'm looking for a second opinion on that..
im hoping someone here can help,i have been wrenching all my life but diesels are new to me

.. by the way, Hi im Jim.. im new here from Ohio..looking forward to making new friends and learning a lot from this site..[/QUOTE]

My Mustang TT does the same thing. Fuel out of turbo exhaust housing.