Have you done the PCV Delete mod yet?
The excess carbon build up back then was probably caused by low octane fuel and compressions.
Do any of you old heads out there recall this?
I don't think that blocking the PCV system with plastic caps is a very good solution either.
I've read many a report of leaking plastic cam covers following blanking of the pipes, along with some potential super knock/missfiring issues. It was covered pretty well on 207oc.com, but unfortunately, that forum had a meltdown recently and changed to 207OC.net and has very little useful info any more.Interested in your thoughts about why not ?
PSA has done this on the newer gen THP200 engines in the likes of the 208GTI without other changes which would suggest they see it either as an improvement or addressing an identified issue ? They sell the parts kit to do it also.