Just a quick write up on how I cleaned my Oil Control Valve (OCV) and filter on my VVTI Supra. The valve itself controls the oil pressure sent to the VVTi intake cam. I changed this more as a prevention than a cure.   I decided to replace the following two parts with new Toyota parts instead of cleaning them, as they are very cheap:     Oil Control Valve Filter Washers for the union bolt OCV o-ring   In the end I didn’t use the new o-ring as the OCV was in very good condition a