Contour Enthusiasts Group Archives Forums Modifications General Mods Valve Cover Breather & PCV separator canister!

Bit lost,the air for the pcv comes into the c/case from the accordian tube ,through the cam covers/pcv valve and into the intake.It looks like you have the flow comming out TO the accordian tube.The gumming of the cast channels/secodaries is caused by hot egr gas and cold ISC air,it condenses and gums up.If the PCV valve is not working then you can get a back flow of engine oil fumes to the accordian tube into the intake(oil in the tube) The main problem with this system I've seen is when aftermarket air intakes are fitted and the pcv hoses from the accordian tube or other aftermarket tube ditch the small resrtictors in the 'stoc' tube ,this throws the breathing all out of wack re flow & depressin in the system.The PCV system is a 'metered' bleed with 'measured air' taken into the intake after the MAF.