Vacuum ports connections

GRiSO Capo Posts : 286 Join date : 2014-10-06

Question : on my 2012 Tenni the vapour recycler has been taken out. I noticed that the left and right vacuum ports on the TB are connected together. See pics.
Should they? I have seen write ups about synching the TB that mentions the vacuum ports as being screwed shut.
Thanks.
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GRiSO Capo Posts : 10704 Join date : 2013-05-29 Age : 67

I think you are confusing the vacuum ports with the air bleeds.

Pete

GRiSO Capo Posts : 10198 Join date : 2013-09-30

I don't think they should be connected together. It kind of negates the whole idea of balance.

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GRiSO Capo Posts : 10704 Join date : 2013-05-29 Age : 67

Yah, it's a simplistic solution but a commonly used one and it doesn't seem to cause any issues.

Guest

That is a 30 year old Yamaha design, link the inlets together by hose.

GRiSO Capo Posts : 10198 Join date : 2013-09-30

I don't like it.

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GRiSO Capo Posts : 286 Join date : 2014-10-06

Agree it didn't seem to cause any problems but seems counterintuitive that's why the air bleed valves are adjusted for balancing the idle speed

GRiSO Capo Posts : 10198 Join date : 2013-09-30

Agree 100%.

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