Thanks repowerguy I have tried that but i couldnt get the engine fired up.
I got two engines and i swapped the camshaft. They are both NT855 . The first engine number is 23104864 and S.O number is 7487 and it was manufactured in 1972.
My second engine is the one with the above information (My Thread) . Can there be any other method or change in the adjustment?? Because i swapped the camshaft.from the 1st engine to the 2nd engine. Does the engine numbers have something to do with this because of the date of manufacture???
If you swapped the cam shafts did you get "ALL" the timing marks lined up right? besides the marks for the crank gear to cam gear there are also marks on the cam gear that need to be lined up with the air compressor/fuel pump drive gear. If these are not lined up at assembly you will not be able to use the marks on the pulley VS 1-6 and so on Or the A,B,C marks depending on the age of engine. There are three different methods to set valves and injectors on these engines depending on type of injectors and what tools you have to work with. Top stop injectors are set to the very light torque as someone already noted, then there is the original method where they are torqued to the 72 inch pounds like another said an then there is the Injector travel method where a dial indicator is used. So I guess we need to know for sure what type injectors you have and what tooling you have to work with.
A couple more things. What was the reason you switched cams, are they the same part number?
You started by asking about injector timing but to be precise that is "NOT" done with the rocker arm settings, this is not a Detroit, it is adjusted by the shim gaskets under the cam follower housings. To do that you need a special tool arrangement that includes two dial indicators, one for injector follower and one for piston travel and the proper instructions that I would not want to try to explain by posting here.Maybe someone who does it daily can but it's been years since I did that job!
And last but probably should have been first if engine won't start are you sure the problem isn't in the fuel supply to the fuel pump or some thing simple like a broken wire to the fuel solenoid?