Cm871 timing?

[09Pete386]

(12-13-2024 )Rawze Wrote:  NOTE: 8 n_m = 71 INCH-LBS.. (not ft-lbs)/... I hope someone did not try to crank those injector set screws to 70 ft-lbs. It would severely damage the injectors.


As far as boos changing by that much.. it can be a lot of things since you took things all apart. things like...

== turbo out of calibration.
== boost leaks.
== collapsed CAC boot.
== missing plug in underside of the head.
== missing block-plate(s) at intake or between manifold and egr cooler, if it is de-mandated.
== cracked CAC from taking it in/out.
== exhaust or intake restriction(s) due to various circumstances.
== getting air in fuel, or fuel restrictions.
== slipped cam.
== incorrect head vs ser#.

the list is long.

Thanks Rawze, I did change the sensor today and it seem to have definitely brought up the boost,
The head was ordered through Peterbilt by the esn, it’s a brand new none reman head, I’ll keep looking into it, I ran it driving empty and it’s definitely improved on boost so I’ll see what it does fully loaded.if you have a chance give me a call sometime if possible to discuss this over the phone, I had done those injector adjustments using NM same type of torque wrench you used in your video.