Truck Repair: m11 cummins, bolt torque specs, head bolt torque specs

Question
What are the head bolt torqe specs. Also will an injector o-ring cause hard start

Answer
The head bolt torque specs is as follows:
3 steps
1 100 ft-ib or 136 N.m
2 160 ft-lb or 217 N.m
3 Rotate 90 degrees.
Note: Rotate at least one flat, but not more than 2 flats.
Bolt must be tightened sequencially starting from the middle outward in concentric form.

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