Removing the glow plugs can be a big job or it can be ease depending on a couple of things. The GP's have a tendenacy to cake up with carbon and they can be diffiuclt if they are stuck. If not it is fairly straight forward.

Not sure if you have to remove the intake manifold. According to the namual, you don't. The manual state the following two steps.
1.Cable to glow plugs ...........Disconnect
2.Pencil type glow plugs........Remove, intall.

To easy to be true. If you tackle this your self, soke the glow plugs the night before with penetrating oil to loosen and make it easy. Use a 3/8 drive socket with a universal or ball joint. Go easy and do not strip the head. If one won't budge, don't strip the GP head. Not sure what you may need to remove.

Good luck

Henry

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