nipple on the throttle body on a ph1 172?

[metalmulisha598]

this may sound like a really stupid question but everytime im under the bonnet it always bugs me lol

the nipple on the throttle body that has a little rubber cover, what is it for?

 

[Josh@Renparts]

sounds like you have the one with the liquid cooling pipe on, same as the old laguna / Scenic 2.0 8v one.

 

[metalmulisha598]

well its a 2001 Y reg ph1 if that helps? it weird coz its just blanked off with a rubber cover so im guessing it doesnt do anything? just wondered wot the point of it was?:S

 

[bmh.01]

It is on the front facing side of the throttle body?

Being that late a car it's possibly got a Ph2 fuel setup on it where the regulator is in the tank not on the rail, and that take off is where the pressure reg gets its vacuum feed off on the Ph1 setup.

Its used for the acoustic valve on a Ph2 but you won't have one of these with a Ph1 airbox.