so we replaced injectors on my kids 2006 6.0. Got the truck to fire up and let it run for about 20 min. ran great no issues at all. He took it for a ride around the block at basically idle speed and didnt make all the way around. the truck started blowing white smoke out the exhaust, he said it looked like a fire extinguisher going off. Anyway got it home and the truck wouldn't fire back up. He tore the right side apart and found the oil rail was loose. he went back through and re torqued everything back down. We tried to start it tonight and there is a puddle of oil under the exhaust, truck wont start at all. When the truck is turning over is sounds like the engine bogs down and wont turn over for a split second and then starts to crank again. I dont have any codes to list yet, hoping to get a scan tool here soon. Any ideas would be greatly appreciated. once i get codes i will post them.

Thanks Tim

 

Sounds like it was/is hydrolocking with fuel.

It isn't a fun thing to do, but I would remove the glow plugs and, then crank, watching for fuel to exit a cylinder.

Hopefully not a bad injector. Where were the injectors purchased?

 

The injectors were bought from Warren diesel, I was kind of thinking the same thing but wasnt really sure. Didnt think we would have got bad injectors, but it happens. Now to figure out if that's the issue. Thanks

 

Where the thread wholes of the injector hold down clamp bolts and rail bolts cleaned with shop air before installation?

 

Same thing happened to mine a few months after I bought it almost 6 years ago.

I took the glow plugs out then cranked the engine to see which cylinder failed. BE CAREFUL, you'll spray diesel everywhere! I was having my wife video it while I cranked (key off, use the red wire on the passenger side) and gave her a good bath in diesel fuel.

You do have to get that fuel out of the cylinder or major engine damage can occur.

Good Luck!

 

Yes they were blown out with shop air before we installed the injectors

 

If the rail has loosened, (all) the rail bolts were not tightened to spec.
If they were tightened and are now loose, the bolts must have been torn out of the threads. I think that is impossible.
I suspect you made a mistake during assembly.

 

Another thought: has the fuel pressure ever been checked?

 

Yep, I think my son missed a few. That's fixed now. Threads were all good to go

 

No I haven't checked it, the truck was running before we swapped injectors

 

Did you remove the rail and check how the injectors look underneath before screwing it back on?
On the passenger side at the blower box there are 2 rail screws that are difficult to reach. I have had running engines, where these screws were missing.
As bismic suggested, remove the plugs to see if hydrolock is present

 

So we pulled glow plugs and cranked it over. Fuel shot out of 3 cylinders. 2 6,&8. # 8 orings were shot, torn to hell. Question is, do i send 3 injectors back or just the one that had bad orings?

 

I don't believe in selling you 3 defective injectors. For me it looks like an assembly issue.

 

Is it worthwhile to check the compression on those cylinders? Make sure there is no other issue?

 

Normally I would TOTALLY agree with you, but I have a collection of links to threads on brand new injectors failing (in one thread, all 8 failed). From just observing threads on these forums, two companies seem to experience issues like this - WDI and Pensacola Diesel. That said, with a loose oil rail identified, it certainly sounds like an installation error was possible. I wonder about the torque wrench. Also, what Torx bit setup were you using (brand/type of bit/socket, length, etc)? IMO Torx bit sockets are tools to buy from a QUALITY tool supplier.