MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.
You are invited to join our public Boat Repair Forum to seek assistance from other members.
You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
stating which engine you have can only help....
As a rule, mercruiser has never run oil thru any manifold on a standard production engine...
you can't post pics until you have five posts so you may wanna try that again.
I have oil on the side of my engine under the intake exhaust manifold side
Does oil run through the manifold.
Ayuh,..... That's the water side of the block, the oil side has the distributor,.....
No oil in either manifold,....
My guess is yer seein' oil from the crankcase vent to the carb hose, or the valve cover is leakin',.....