[wejaz28]

My next issue with my new to me boat.... on my motor there are 2 screw in oil caps, one on each valve cover. I never seen where one of these ports were not a vent or part of a PCV system.

I was unable to locate pictures or diagrams of any pcv systems by searching here or internet. any direction is appreciated

96' Mercruiser 5.7L

[mikeyt]

As a 'Silver Contributor' you do have access to the Mercruiser engine manuals that are located in the "Maintenance & Repairs" section.

[wejaz28]

Sorry, I couldn't seem to find the section referring to the Crankcase ventilation system

[mikeyt]

Hopefully someone here with the 5.7 will chime in but given how slow things are around this place, it might be quicker to do a You-Tube search & see if someone has done a video

[Motoxxx43]

I'd guess that because of the age of these boats and lack of emissions a pcv might not be utilized. Thats just a guess.

[Motoxxx43]

Are you experiencing any particular issues or just trying to locate a PCV?

[wejaz28]

I sorted it out. There are no actual PCV valves used. There are two hollow adapters that resemble PCV Valves. These have hoses that run from each valve cover to a rinky dink plate that connects both hoses in the general vicinity of the carburetor opening. It work, i guess.
My original issue was that there is also an opening in each valve cover that have a screw in oil cap in them. Seemed odd, but seems to be in order.