Holes And Plugs...

2002 Speed Triple 955i

On the back of my airbox there are 4 holes (or pegs to take tubing).

Can anyone definitively say what they are for?

A - drain hole?
B - breather from the crankcase
C - I don't know. The tube needs to go somewhere though!?
D - I don't know.

The cover has both a lip on its edge and also a gasket, so great pains have been taken to get it to seal appropriately...so then why all these 'holes'? Except the crankcase one....that is the only one that makes sense.

Then, second photo....is that the plug to a pc for diagnostics?

Thanks all!!

 

For what it's worth,

A is flush on the inside, suggesting it IS a drain hole. The other three all have 'pegs' or posts on the inside so the hole is raised off the base of the case. If that makes sense...

 

Thanks Joe MC Donald. It's a 2002 955i Speed Triple.

My understanding is...
A - drain hole
B - crankcase breather (this is obvious in that I know for sure. I disconnected it and remember doing so).
C - this connects the airbox to the fuel pressure regulator on the fuel tank and helps with pressure of fuelling...(or something). I know this has definitely been disconnected from the fuel tank in recent weeks and likely accounts for some poor performance recently.
D - unknown...

But, open to being educated!

 

That's really good of you, thank you Joe McD.

What/where is the diagnostic plug/socket on these bikes...17 pin isn't it? I can't see one anywhere that big or obvious..

 

There's a joke in there somewhere about using it on tight nuts...

 

Thanks thebiglad...

I have found the pc connection (photo below).

It does seem - but open to education - that 3 of the 4 holes on the airbox are identified.

Drain
Crankcase breather
Fuel pressure regulator

But the fourth? Is that part of the EVAP system, is that what you are referring to?

This isn't on the throttle body....this is on the airbox (just to clarify).

The second photo below shows the EVAP system. It looks like (#1) that one of the tubes from my fuel tank (vent pipe) should be connected here...?

When I Itfirst took the tank off I am sure that the two tubes (bottom left of the tank) had two rubber hoses on and they were just hanging down and out the bottom of the bike (the two tubes from the tank - overflow and drain). But...should the vent pipe really be plugged in to the EVAP as per the diagram?

Goodness....this is confusing...

 

Thanks. And, I didn't mean to confuse things... The EVAP is an interesting thing (that I've learnt all able this evening with a bar of toblorone and cheap whiskey), and relates, possibly, to "a dangling pipe from the fuel tank", but is unrelated to my airbox holes...

So, if anyone wants the kudos points for identifying that last peg/hole (#D on the original photo)...it's all to play for!!

 

Thanks JoeMcD (and the boy), much appreciated.

Maybe that's it...the final one is for the secondary air system - which I know the bike doesn't have... So it's just a moulding 'if needed'.

I am pretty sure that I found the pc connection plug (phot previously) the alarm/immobiliser I've located and can see the bypass connections on it.

This has all been really useful...I've learned a lot! Thank you all!