Another cracked piston

Rmartin-97 · Dec 16, 2013

How many psi shoul I see on a compression test?

webb06 · Dec 16, 2013

Rmartin-97 said:
How many psi shoul I see on a compression test?

Over 300

jdgleason · Dec 16, 2013

Much less than 350 isn't great

TyCorr · Dec 17, 2013

Thanks for.that productive side.discussion! The 6.4 is a hot running motor literally and figuratively.

6.4strokin · Dec 17, 2013

Tuned and delete I think they are super cool because of compound turbos. U think 6.4 are hot motors put a single on it and see what happens. Detail over carry on

Sent from my iPhone using Tapatalk - now Free

cory151 · Dec 17, 2013

Well if it is not a cracked piston I recommend a change in the thread title. As I would not want to advertise the fact that I claimed to have nuked a motor and here all it was I overfilled my truck with oil. As a matter of fact "I overfilled my truck with oil" is my suggestion for the thread name. Might save somebody reading 15 pages worth of over reaction and fuel hate for the 6.4.

Rmartin-97 · Dec 17, 2013

cory151 said:
Well if it is not a cracked piston I recommend a change in the thread title. As I would not want to advertise the fact that I claimed to have nuked a motor and here all it was I overfilled my truck with oil. As a matter of fact "I overfilled my truck with oil" is my suggestion for the thread name. Might save somebody reading 15 pages worth of over reaction and fuel hate for the 6.4.

I didn't overfill the oil. It's getting fuel in the oil somehow.

StockCar#10 · Dec 21, 2013

Could it be a hpfp leak?

Dan · Dec 21, 2013

Do the injectors have a return through the head? I wonder if it's an injector oring?

(See that lots in on highway trucks)

webb06 · Dec 21, 2013

Dan said:
Do the injectors have a return through the head? I wonder if it's an injector oring?

(See that lots in on highway trucks)

Yes there's a return in the head. Exits at the front and goes back to the fuel bowl.

Dzchey21 · Dec 21, 2013

Rmartin-97 said:
How many psi shoul I see on a compression test?

like stated over 300 at least, atmospheric pressure plays a part in that, but 350-380 is ideal i think new engines are near 400.

Mainly make sure they are all close to the same

6.4 Stroker · Dec 30, 2013

Any news on this?

Rmartin-97 · Dec 30, 2013

6.4 Stroker said:
Any news on this?

Just been trying to find how the fuel is getting I the oil. I can't find any leaks with the truck running. Kind of at a loss right now.

Dzchey21 · Dec 30, 2013

injection pump...

B585Ford · Dec 30, 2013

Dzchey21 said:
injection pump...

It almost has to be with everything you have done and not found the leak. That seems like the 2nd or 3rd time recently (if you confirm the K16 is the problem) I have heard of the K16 filling the oil with fuel. IDK if that was happening before and I just never heard about it or if this is a new thing.

Rmartin-97 · Dec 30, 2013

Dzchey21 said:
injection pump...

Is there any way to diagnose that for sure?

StockCar#10 · Dec 30, 2013

Rmartin-97 said:
Is there any way to diagnose that for sure?

Pull the cover off put the lines on an pressurize the system? Or is that not possible...

B585Ford · Dec 30, 2013

StockCar#10 said:
Pull the cover off put the lines on an pressurize the system? Or is that not possible...

I am no expert and IDK where the leak comes from in the pump, but wouldn't you need to pump to actually be working to know for sure given the K16 has a 2 valve/regulator system?