Re: PCV Valve???

Posted by Tim Cole On 2015/3/22 7:24:56

I suspect the taxi set up was a rudimentary routing of the syphon tube into the air intake.

A modern setup requires a change in carburetion because the PCV allows up to 20% of the air intake to come through the crankcase at idle. Two calibrated orifices are added below the throttle for draw and this requires a change in venturi and jetting. Sure the car will run, but it will have poor idle quality.

PCV is mostly an emission control whose primary benefit occurs during low speed operation. If the car is using detergent oil and gets regular maintenance not much benefit will be achieved.

I'm too old to care about the environmentalists who drive around the country burning gas to protest overpopulation. As they say in the Army - not my problem.