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DSYKES5500

What is the purpose of this hose?

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DSYKES5500

Hi all,

 

While fitting the hoses I got from BakerBM I noticed that the pipe on the throttle body was blocked by rock solid rubber dust from the inside of the old hose.  It goes from the top of the throttle body to the oil filler cap.  When I cleaned it out and gave it a tickle with compressed air it's only a brass coloured hole that's only able to get a needle through.  My thoughts are that it pulls vapour from the filler with a vacuum created by the intake back through into the combustion chamber.  Is this what it's for or am I completely wrong??  Now that it's all nice and clear what effect will it have on the running of the engine?  

 

Thanks

 

Dan

20190905_193908.jpg

20190905_194547.jpg

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Thijs_Rallye

It is indeed an oil vapour breather hose.

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karabas

Could be the one shown in the pic.

Screen Shot 2019-09-08 at 16.20.56.png

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