The Ford Barn - View Single Post - y-block blow by..

miker98038 · 11-15-2019, 07:55 PM

I had a PCV valve in the valley pan without sufficient baffling. It pick up a lot of oil, which on my set up mainly ended up in # 7&8 cylinders. But that was into the rear carb fitting on a 4 barrel. A stuck PCV valve will also produce your symptoms, to the point of blowing out a valve cover gasket in extreme cases. (Ask how I know, and the mess of oil on the exhaust is almost as bad as the heart attack when all the smoke shows up).

What engine was that PCV designed for? Did it mount vertically in the OEM application?

How much oil is the engine using, and how many miles since the rebuild?

11-15-2019, 07:55 PM	#13
miker98038 Senior Member Join Date: Mar 2013 Location: Kent, WA. Tucson, AZ Posts: 1,397	Re: y-block blow by.. I had a PCV valve in the valley pan without sufficient baffling. It pick up a lot of oil, which on my set up mainly ended up in # 7&8 cylinders. But that was into the rear carb fitting on a 4 barrel. A stuck PCV valve will also produce your symptoms, to the point of blowing out a valve cover gasket in extreme cases. (Ask how I know, and the mess of oil on the exhaust is almost as bad as the heart attack when all the smoke shows up). What engine was that PCV designed for? Did it mount vertically in the OEM application? How much oil is the engine using, and how many miles since the rebuild?