P0251 6.5l please help.

[Trucker2k16]

How stretchy is that timing chain?

on those high mileage 6.5s in thr fleet we had to cahnge them because the stretch would make it hard to stabilize

900 miles on this engine.

 

[ak diesel driver]

what's the closure rate in milliseconds?

 

[Trucker2k16]

what's the closure rate in milliseconds?

I have no clue what you mean my scanners want nothing to do with this truck all i know is it wont relearn and has to be maxed out to pass side to even get 10.8 on actual idk if the pump is going out or the chain got ****ed idk im lost

 

[ak diesel driver]

what scanner are you using?

 

[Trucker2k16]

Snap on zeus and matco maximus 2.0 and one on my phone which is where my photos come from i did the koko but i heard its 45 sec pedal down with key on and key off i did 45 sec key on pedal down 30 secs key off and thats how i got my first relearn.


Could a bad ip cause it to not relearn?

 

[ak diesel driver]

generally the IP timing is out of range. I know on the OBD1 system it can get stuck out of range but IIRC it throws a code too. Do you have any codes? Certain codes will keep it from relearning too

 

[ak diesel driver]

with a -2.46 I would try moving the pump to the passenger side quite a bit. IIRC that's the max reading you get no matter how far out it is

 

[Trucker2k16]

with a -2.46 I would try moving the pump to the passenger side quite a bit. IIRC that's the max reading you get no matter how far out it is

Here is what i got when i moved it to passenger side and it was maxed out could not turn any more

 

[ak diesel driver]

wonder if your timing chain is off a tooth

 

[ak diesel driver]

that's getting closer

 

[ak diesel driver]

does the rattle sound change any?

 

[Trucker2k16]

does the rattle sound change any?

Yes just a little it does change. do i need to advance the timing ive been going to passenger side?

 

[ak diesel driver]

No passenger side is the way you need to go. IMO you need to check the timing chain for either dot to dot misalignment or sheared key

 

[Trucker2k16]

No passenger side is the way you need to go. IMO you need to check the timing chain for either dot to dot misalignment or sheared key

Done did that to the cam moves with just a little movement of the crank

 

[Trucker2k16]

No passenger side is the way you need to go. IMO you need to check the timing chain for either dot to dot misalignment or sheared key

Ive maxed out going to passenger side and got 10.8

 

[Trucker2k16]

No passenger side is the way you need to go. IMO you need to check the timing chain for either dot to dot misalignment or sheared key

I have a new ip to put onbut im lost on why i cant relearn the tdco like wtf

 

[ak diesel driver]

So you've checked dot to dot alignment? Also a keyway can shear and still move things. Parts kinda wedge but not in the right spot

 

[ak diesel driver]

If it's too far out of range it won't relearn

 

[ak diesel driver]

I guess it's your choice which to try

 

[Trucker2k16]

So you've checked dot to dot alignment? Also a keyway can shear and still move things. Parts kinda wedge but not in the right spot

Not the dot dot dot but ill pull the front cover when i pull the ip in just a min