VR6 breather pipe off enigine inlet pipe, important??

[adamukcorrado 0]

on my VR6 the breather pipe/ non return valve coming off the large plastic air inlet has been in pieces since i bought the car, previous owner has unsuccessfully bodged it, meaning the breather pipe is never fully connected. engine seems to run fine and sailed through recent MOT so what does the pipe in question actually do? is it worth spending money fixing?

[PhatVR6 0]

it's a PCV

 

Positive Crankcase Ventilation system. in that it uses the vaccum of the intake to draw out the fumes from the engine. downsides being, that horrible, hot smelly air actually reduces the octane rating of the fuel onceit's in your engine.

 

if the pipe is split, you're letting in too much unmetered air into the intake, which isn't good as it'll confuse the ECU and also upset your MPG.

 

bin the pipe, block off the hole in the intake and fit a K&N or Pipercross breather filter on the rocker cover...

[adamukcorrado 0]

consider it done! :salute: cheers.