Been searching can't seem to find the answer I am looking for. Here is what happened couple weeks ago I was driving my truck (99 7.3 PSD) and thing started loosing power. I get to where I was going. Park the truck check the oil and look for loose intercooler tube. Don't see anything let it cool down and take off again. Starts loosing power again I barely make it back to the jobsite. So I let it sit for the rest of the day and then have my helper follow me home it runs pretty good until I get a mile from my house. Starts running rough but never looses power like it did before.

So I thought maybe the turbo was seizing up when the truck was getting warmed up. I park the truck until I have time to work on it. I hook up a boost gauge so I can check to see how many PSI it is making. Boost seemed kinda low so I find a low mile turbo and swap it. Truck seems to be running good now. So I take it to run errands this morning I make it to the first stop and it is starting to loose power again right before I get there. I shut the truck off go in to drop off a bid then go to leave and black, blue, grey, and white smoke start pouring out the tail pipe huge clouds. I call the tow truck and have the truck hauled home. I get it home and the engine won't crank it just stops like it is Hydrolocked. So stuck injector(bumming cause the injectors are rebuilt and only have 6k miles on them)? Blowby? Is there anyway to find the cylinder without pulling each injector? Thanks for the help.

 

Can you turn the engine by hand using a breaker bar on the crank pulley bolt?

Was the engine knocking when you had the huge cloud of smoke?

 

I didn't try turning it over by hand. And it was making some loud knocking noises when the smoke was pouring out.

 

I think the smoking gun is the "injectors were rebuilt only 6k miles ago" statement. The knock sounds like a failed injector (broken tip or something similar). Who rebuilt your injectors? and then who installed them? If you can't turn the engine over by hand with a breaker bar then you might have a hydrolock situation.

I think some other members will have some additional suggestions as well. Post back your answers and we'll go to the next step.

 

One other thing I can think of would be a pushrod issue, but normally that wouldnt lock it up. Only way to test the injectors without running the truck is a buzz test.

 

100% agree with this diagnosis.
Pull all the glow plugs, have a helper turn the crankshaft with a breaker bar and watch which cylinder squirts the oil out the glow plug hole.
That is your bad injector, pull it out and get it fixed, whatever the problem is.

 

Hey Stang, there is a couple of use local. I dont have AE but someone near us should have it.

 

Got the injectors from Pensacola Fuel Injection | Worlds #1 Diesel Rebuilder. And I installed them. I was careful not to bang them around when I installed them. I was afraid you would say pull the GP. LOL I will try and mess with it today if I have time.

Now if it would start could I find the cylinder with a temp gun?

 

Thanks.

 

i havent heard very much positive about them....

 

So I put a breaker bar on the crank and it moved a little then just stopped. I could hear liquid in one of the cylinders making a squishing sound. Sounded like the Passenger side so I will start there.

 

I have heard nothing but horror stories at about this place. A buddy of mine went thru 3 sets of injectors in a matter of weeks before finally demanding a refund.

I think like others have said, you probably have an injector stuck open and the cylinder filled with diesel fuel and your motor has now hydrolocked. I will guarantee you have a bent rod in that cylinder now.. I worked on a motor with nearly the exact same issue you're having.. Here is a picture of the rod that came out of that.

 

Well I will be amazed if it is bent. Motor has forged rods. And it wasn't running when it locked up. But we will see.

 

The above picture is also a forged rod and it bent trying to start as well.

 

Based on the things we know so far, I would NOT try and start the engine. At this point, there is a chance that nothing is bent yet. Depends on how long you let it run while it was fuel knocking and how much fuel was leaking un-metered. I had a split nozzle a while back and it knocked like a SOB but apparently survived once I had the injectors fixed.

If it were me, I would pull the valve covers and see if any of your push rods are bent. Like Dan suggested, you can then pull the glow plugs and get two friends to watch while you turn the engine over by hand, they are looking at the glow plug holes for fluid coming out...that will be your problem spot. I would then pull all the injectors and send them to Jim at Rosewood and have them checked. I bet he will find a leaking nozzle or some other type of failure. If you are lucky, some new nozzles and rebuild is all you will need and will be back on the road.