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V7.ii oil in air box

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jefrs View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jefrs Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 12:34
Related but probably fuel tank vapour return -

What on earth is this spigot for? (red arrow thing)
It appears to be blanked off as putting my finger over it does nothing and I can feel no suction, no air leak.


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motopete View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote motopete Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 12:58
Yes, it's blanked off and not used on the V7 II.   I believe it is used on the V7 III, it has to meet more stringent emissions regs.

If you had a leak there you'd certainly know about it! 
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jefrs View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jefrs Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 13:23
Originally posted by motopete motopete wrote:

Yes, it's blanked off and not used on the V7 II.   I believe it is used on the V7 III, it has to meet more stringent emissions regs.

If you had a leak there you'd certainly know about it! 


Yes. It appears to be used on the USA/Canadian versions. But it beggars the question, if it is blanked off, why screw an expensive hose connector into it?
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 13:34
The US versions have an activated carbon evap canister, all to do with emissions and fuel vapour.

Regarding your other point, this is Guzzi we are talking about.LOL
Brian.

Better 5 minutes late in this world than years early in the next.
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 13:41
No, it's not the evap canister, that connects to the V shaped manifold. P43. P29 shows the US airbox.

Note the caps on those spigots.


Brian.

Better 5 minutes late in this world than years early in the next.
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jefrs View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jefrs Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 13:48
Originally posted by Brian UK Brian UK wrote:

The US versions have an activated carbon evap canister, all to do with emissions and fuel vapour.

Regarding your other point, this is Guzzi we are talking about.LOL
 

Yes and the drawing for the USA has a return pipe from the canister to that spigot. 

I have found another drawing of the 2015 V7ii ABS UK showing an exit hose pipe where cap  (15) is shown above. I took a copy but I've lost the link.



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jefrs View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jefrs Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 13:50
My bike is 2015 V7ii ABS Stone.  

And the earlier version is this -


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Andyb Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 22:53
Hi Jefrs,
I think you need to go and spend some time just riding your bike and not worrying about it.  Sometimes a few good miles puts things into perspective.  And often these problems just melt away.
Andyb
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BobV7 Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 23:09
Somehow don't think Piaggio would bother redesigning something that has no effect when it's used on a different model. Bit like mens nipples I suppose. Scooters are quite nice now and all the oily bits are hidden away.
V7 Classic Black and gold is the best colour
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jefrs Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2018 at 11:07
Originally posted by Brian UK Brian UK wrote:

No, it's not the evap canister, that connects to the V shaped manifold. P43. P29 shows the US airbox.

Note the caps on those spigots.




P.43 shows the evap connecting back the Vee on the underside, part (8) 

The nozzle on mine is above. But why fit a machined part when a blanking plug would be cheaper and better.  It appears to be screwed in but the plastic is not drilled thro' - so why even fit the thing at all.
No I do not have an evap can. 



Edited by jefrs - 05 Oct 2018 at 11:22
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Brian UK View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2018 at 11:16
Brian.

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jefrs View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jefrs Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2018 at 11:34
Originally posted by Andyb Andyb wrote:

Hi Jefrs,
I think you need to go and spend some time just riding your bike and not worrying about it.  Sometimes a few good miles puts things into perspective.  And often these problems just melt away.
Andyb


Mechanical stuff never gets better by itself. It needs maintaining. Ignoring it won't make it go away, it will only get worse. 

I am so not worrying about it. I am finding out how it works and making it better. I'm supposed to be half mech.eng, it's what I do, redesign stuff and build it better, then the miles on the bike melt away.
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jefrs View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jefrs Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2018 at 11:44
Originally posted by BobV7 BobV7 wrote:

Somehow don't think Piaggio would bother redesigning something that has no effect when it's used on a different model. Bit like mens nipples I suppose. Scooters are quite nice now and all the oily bits are hidden away.


I rode a Burgman recently - "scooters are quite nice now" is an oxymoron, it was not a pleasant experience.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote asaleo Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2018 at 13:20
I agree with you jefrs about finding causes for misbehaving of engines and other things. I can not resist the wish to understand why things go wrong. I enclude a scetch of the ventilation system of the V7 II as I have seen it. There is only one connection to the air box. I do not know the pressure in the hose from the frame pipe. When pistons go down air must be moved outwards in the hose and when they go up, air is drawn into the crankcase from hose. I guess that oil in the oil mist is clean. Carbon particles will not follow the oil mist up into the frame pipe. There is a one way valve in the connection to the sump which will prevent oil to raise in this hose. Thus oil is prevented to raise and reach the air box.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote asaleo Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2018 at 13:24
It should be an anti return valve in the hose between frame pipe and air box too. I forgot that
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