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This is not really a job for beginers especially without pictured instrutions. But here is a general basis of what needs to be done. First remove the throttle bodies from the intake manifolds(a 750 is a 12 cylender, 2 manifolds, 2 throttles) then you will need to remove the intake manifolds, for that you will need to remove the metal heat shield covers on the inner portions of the manifold exposing the 11mm nuts holding the intake to the cylender heads...you will need a magnetic 11mm socket so as not to loose these special sized nuts. After removing those bolts you will need to make sure all other retaining screws and vacuum lines have been taken off the intake, the fuel line must be discconected also. Then remove the manifolds exposing the wiring harnness for the injectors, remove this wiring harness and hold it out of the way with a bungee cord of sorts. then you can access the 10mm nuts holding both of the head cover gaskets on....as you can see it is pretty involved. Good luck to you and plan on about 12 hours worth of work time to do this repair.
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