Blew my Motor?

[MichaelWright]

Need some help here.



I was scootin' down the eway at 60mph. I got on it to get around a slow auto. Cloud of black smoke, BANG, no power, feels like I spun the drive shaft. Motor is clunking, no oil pressure, as I coast to shoulder and shut down. Engine will start, but no oil pressure. I did not try to move it.



The only code was P0602, which has to do with the computer or something.



I called for wrecker, had it towed to my shop.



There was no fluid loss (leaks), no visible holes in block or pan. Undercarrige was bone dry. Drive shafts intact.



Edge set to 4, BullyDog Pup set to Performance.



Any ideas? Did I snap a rod?



Mike

:{



On edit: I was thinking that it might also be the transmission input shaft or TC, seeing as the truck will not move. The oil pressure thing has got me stumped though. Rear main blown? Or does the oil pressure gauge reading have something to do with the P0602 code?

 

[BCarmicle]

Will the transmission shift into gear? When I broke my input shaft the shifter was very loose and wouldn't go into any gear, felt like the linkeage was broke.



Brandon

 

[scootergmc]

I don't like the clunking sound, but does it clunk when running and not moving?

 

[AK RAM]

There are not too many things that can knock out the oil pressure yet still leave the engine in good enough shape to run, however badly.



What level was your BullyDog Power Pup set on? If it was on "Extreme" stacked with the EZ you may have popped an injector tip on one of your honed injectors. That is a lot of pressure pushing on an injector that was already a little sloppy to begin with. If that was the case, it would put a hole in the piston, which would go "Bang". You would likely have no oil pressure (well, very little), and the crankcase would be well over full. Bottom of the truck would likely be covered in oil coming out of the breather tube, but not if you stopped right away. It would still run, just sound terrible and bellow black smoke. Bent valves would be knocking pretty good. Crankcase would be full of fuel.



Did you check the oil to see if it was well over full to indicate it has fuel in it?

 

[JStieger]

Blew turbo? I've never experienced it, but someone described somewhat the same symptoms to me when he blew his turbo.

 

[JHardwick]

Edge set to 4, BullyDog Pup set to Performance.

What level was your BullyDog Power Pup set on? If it was on "Extreme" stacked with the EZ you may have popped an injector tip on one of your honed injectors.

:-laf

 

[AK RAM]

Oh sure... . rub it in.

 

[JHardwick]

:-laf sorry, could't resist

 

[NBowlin]

It sucks having fun is so expensive.

 

[MichaelWright]

scooter,



Yes, it clunks while not moving. It was hard to tell where the clunk was actually coming from. It was either at the pan or transmission.



Mike

 

[MichaelWright]

Bcarmicle,



I did not try to put it into gear. I can't recall if it was loose on the colum or not. I'll check it tomorrow.



Mike

 

[MichaelWright]

I checked the dip stick. Oil was at normal level, no fuel smell.



Mike

 

[MichaelWright]

Jsteiger,



That was another thought, blown turbo. But I think not. I am leaning towards the input shaft, as the truck will not move under its own power. The engine sounds smooth from the top, the clunk is down near oil pan/transmission.



Mike

 

[Gary - K7GLD]

Blown flexplate?

 

[MontyDyer]

A broke input shaft may be the case but it still would not explain the drop in oil pressure. Have you drained your oil and checked for any shavings?

 

[dan.poitras]

One trick that has served me well over the years is if you suspect engine internals, be it a highway tractor, motorcycle, whatever. Pull the oil filter, cut it open with a appropriate sized pipe cutter as not to contaminate the evidence. Remove the filter media and spread it over a newspaper so the oil can wick out. If their are any particles

you may be able to identify it's source.

 

[CATCRACKER]

when i blew my input it made a snap sound and i was in instant nuetral there was some clattering from the bottom of the truck at the time my guess was input. i blew my stock input in the ats with 360-380hp. i got lucky and my input broke clean if yours sprial broke then it wiped put you converter pump etc you will belooking at a new transmission. Billet input shafts are a must.



with that said it doesnt sound like transmission problem rather and engine one my guess would be injector tip. whos injectors are they? i have heard that cheap injectors on the 3rd gen tend to break at the tip.

 

[FFL8N]

When I melted my number six cylinder it sounded very much light you just explained. I hope that this is not what happened, but it sounded just like what you said.

 

[whamby]

All of these things are possible but if it is in the engine and it runs the truck should still move. It may sound like crap but it should move as long as it is running. He said the truck will not move. It is possible I guess that he actually has 2 problems such as a blown flex plate and internal engine damage. Just my $. 02

 

[whamby]

Another idea although it would be bad is that the crank could have broke around cyl. 5 or 6. This could account for low oil pressure, low power, and no momentum. I haven't heard of a cummins crank breaking but I am sure it has happened. Possible it had a defect in the metal??? The powerstrokes have had a lot of problems like that when they are souped up(PLEASE DO NOT THINK I AM COMPARING THE STRENGTH OF THE CUMMINS TO THE POWERJOKE BECAUSE I AM NOT. JUST TOSSING OUT IDEAS ) If it was mearly a rod broke the truck should move if it would run at all.