Fuel pressure regulator
Discussion
The fuel pressure regulator is fitted to the end of the fuel rail. The fuel rail runs round the base of the plenum chamber. The pressure is at the back of the plenum on the driver's side. It is a push fit into the end of the fuel rail and secured with two screws. The fuel return hose comes out of the side of the regulator, and there is a vacuum line from the plenum connected into the end. You can see the regulator without dismantling anything, but there are plenty of other things in the way so it may not be obvious. But if you look where the fuel hose joins the end of the metal fuel rail on the driver's side you should be able to spot it.
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