Re: Cleaning cylinder drain port
No, all you need to do is remove the drain covers. You do not need to clean the inside of the transfer chambers.
There were a couple of different systems, depending upon year. However all systems were designed to improve idle and really only function at idle.
basically, at idle, fuel and oil puddles out in the crankcase and transfer chambers. Eventually it gets great enough to blow into the cylinder, causing a misfire. The cylinder drains remove this puddled fuel and oil before it gets great enough to cause a misfire. Some constantly blow a small bit into the cylinders to be burned and some systems recirculate the oil to the manifolds or bearings.
