57 Ford with 312

[Habusailor]

I am getting some blow back out the breather. Any suggestions


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[Dobie Gillis]

How much is "some"? If you're still running the road draft crankcase ventilation system you will get some fumes out of the breather at idle and low speeds. Converting to a more modern PCV system will pretty much eliminate that. If it's in the mosquito fogging category you have an internal engine problem. Rings?

 

[paul2748]

Make sure the road draft tube on the side of the engine is clean and not plugged up.