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Fuel pressure regulator


p.mole1

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I am about to fit a set of DTH throttle bodies and will be using the standard Rover fuel rail. Why does the pressure regulator have a vaccum connector?. I also have a vaccum pipe connected to a plastic cylinder with an electrical plug which I think is a charcoal can for collecting fumes. Can I just remove the vaccum pipe? will petrol tank still be able to vent, breathe. Also the engine has a vaccum connection to a breather on the cam cover via a very small drilling, I have been advised to ignore this, however if I block this the crankcase will have no through flow of fresh air to rid it of blow by fumes, does it matter?

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The vacuum connector is there so that the fuel pressure is referenced against manifold pressure rather than ambient, this ensures that there is a constant 3 bar of fuel pressure cross the system regardless of manifold vacuum.

Leave the vac connector off the FPR when fitting TBs , disconnect the vacuum pipe and send the cam cover breather to the airbox backplate. Disconnect the vacuum pipe to the charcoal canister and disconnect the canisters electrical connector.

Oily

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