PCV hose restrictions. Exhaust smoke


Forum User
Hi all.
So I’ve been getting some white greyish smoke out of the driver side exhaust. I’ve checked the PCV valves and they seem to be function correctly. I did notice that the hoses didn’t have the flow restrictor inside of them.
A. Do they need to be there?
B. If they do, could this cause exhaust smoke? I’ve noticed a bit of oil on the inside of the pipes.

For info: the smoke only happens when warm, it smokes more under throttle

Thanks in advance!


Vehicle Dating Officer
Staff member
Club Member
Ah!!!! Totally missed that in the name! I will swap my membership for a Spec savers one!!!