Bleed Hose and Air Box check valve hose connections

[OldGuy77]

Putting my 1990 Mercury V6 175 carb back together after the rebuild. Decided I wanted to replace the bleed lines with tygon hoses from U.S. Plastic. Have the bleed valve connections diagram and all is good till I come to the valve out of the front of the adapter plate and the one at the top front of the crankcase which according to the diagram has a bleed hose connecting the two. However, the hose from the Air Box check valve which research says is to assist getting rid of gas vapors etc from the crankcase doesn't seem to have a valve to connect too. My thought is from the description of its purpose is to put a tee fitting in to the hose direct to the bleed valve in the front of the adapter plate and combine the two lines with the bleed valve at the top of the crank case and the one at the bottom of the adapter plate. Comments please.

 

[Dukedog]

just plug tha one that supposed ta go to and/or from tha air box.. some had tha bib and some don't.. don't know why but it is Merc soooooooooooooo.. do not interrupt tha one goin' from top ta bottom of block.. thats oil supply mixture to tha top bearing...

 

[OldGuy77]

just plug tha one that supposed ta go to and/or from tha air box.. some had tha bib and some don't.. don't know why but it is Merc soooooooooooooo.. do not interrupt tha one goin' from top ta bottom of block.. thats oil supply mixture to tha top bearing...

Thanks Dukedog - I left out one thing out on the initial post - Im running premix - got rid of the oil injection after it crapped out. So I have Pipe bolt stopper in the place that had to do with the oil injection before. Not sure where the line from the air box goes too - cannot find anything that appears to be a connecting check valve/bleed valve.

 

[Dukedog]

yeah, understand.. ya might wanna get tha regular oiler delete kit (check Pro Marine site) to install.. its not expensive and gives ya a cleaner look..
never did understand why on some mercs had tha bleed bibs on all 6 cylinders and some only 5???

 

[OldGuy77]

Thanks for your input - I completed actually did get the oiler delete kit with the piece that ensures the piece in the crank doesnt come loose - after re-reading your post just going to plug the air box valve - as to the its a Merc soooooooo lol totally agree but still love the old girl.