[Vwdiesel] swapping engines

[Dave]

Hi,

  I am swapping engines in a 82 VW diesel Rabbit.  The
engine I am putting in was running good 4 years ago
when I took it out of another diesel Rabbit.  Should 
a pull an injector so there is less compression and
rotate the engine a few times prior to putting it and
getting it going.  Can I just take a wrench to the
crankshaft and rotate a few times to free up
everything. 

Thanks

Dave