should look like this http://www.shop4parts.co.uk/?name=s...&secondary=131&opts=58&btnViewProducts=Search
you want to look on the inlet manifold not sure on the 8v,mines on the far side of manifold, but should have a connector on plug, unplug remove 1 bolt not sure what head type and gently twist and pull(just an o ring sealing it).
i used electrical contact cleaner spray.