Quick Version:
Does anyone know if there is a pressure relief valve on the VRO unit? or an air chamber that you plug with a small black disc when installing a new one?
Or anything about what this hole is for?
Photo attached.
Longer Version:
I am working on my Johnson 120 and trying to rule out possibilities of the engine surge / erratic idle...one of them has to do with the VRO unit.
I have already spent about 4 hours searching this all over off and on with no luck
When I went to prime my fairly newer VRO (bought within past two seasons) I didn't know my squeeze bulb was bad and I was really trying to prime it..noticed there was a small bit of oil / gas coming out from under a circular disc on the top of the unit after I was done. Watched and when I prime it hard it comes out each time.
Couldn't find anything on it...online.
Finally went to the dealer and he brought out a brand new one...lo and behold there was a HOLE right where I have circled in the photo..so this must be some sort of pressure relief valve or something right? It looked as though the box contained the cap / disc to cover that hole but he actually didn't know and was too busy to dig through all the tiny parts.
I am wondering if this is normal to have a bit of gas come out there or if this could be a possible air leak?
Photo is attached.
Thank you.
p.s. When I get back next week I will be trying to do a pressure test but still want to know what this hole is for.
Does anyone know if there is a pressure relief valve on the VRO unit? or an air chamber that you plug with a small black disc when installing a new one?
Or anything about what this hole is for?
Photo attached.
Longer Version:
I am working on my Johnson 120 and trying to rule out possibilities of the engine surge / erratic idle...one of them has to do with the VRO unit.
I have already spent about 4 hours searching this all over off and on with no luck
When I went to prime my fairly newer VRO (bought within past two seasons) I didn't know my squeeze bulb was bad and I was really trying to prime it..noticed there was a small bit of oil / gas coming out from under a circular disc on the top of the unit after I was done. Watched and when I prime it hard it comes out each time.
Couldn't find anything on it...online.
Finally went to the dealer and he brought out a brand new one...lo and behold there was a HOLE right where I have circled in the photo..so this must be some sort of pressure relief valve or something right? It looked as though the box contained the cap / disc to cover that hole but he actually didn't know and was too busy to dig through all the tiny parts.
I am wondering if this is normal to have a bit of gas come out there or if this could be a possible air leak?
Photo is attached.
Thank you.
p.s. When I get back next week I will be trying to do a pressure test but still want to know what this hole is for.