If its a brand new motor, just make sure it turns over, if so your good to go.
If a used motor, I'd bench start it to make sure it runs good w/o problems before an install.
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Always make certain the injector pump is lubricated. If there is a special fill tube for it make certain its topped off before spinning the engine.
Spin the engine a few times before trying to start. Remember, clean fuel is essential and a topped off battery is necessary to get them spinning the right rpm to start.
Good luck and you'll love it when it kicks in and fires.
If it's stuck, don't force it! Rock it gently back & forth and if you can't get it loose pull the injectors and squirt a little penetrating oil like PB Blaster or Kroil down each hole and keep rocking. It probably will be OK in spite of my efforts to fill you with fear and dread.
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Re: engine install
New or used, I always pull the injectors and squirt a couple of squirts of automatic Transmission fluid in the holes and replace the injectors, and in stall and bleed and start ! makes em smoke at startup, but stops quickly. it loosens up the top end , seals the rings and gives some start up lube !! always worked for me and a cheap fluid to use !!