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Throttle Body Air Leaking Issue

Modern 961 Norton Commando Motorcycles

Throttle Body Air Leaking Issue

Postby richard-7 » Wed Jun 22, 2016 5:57 pm

Guys (girls? if there are any)

Just found out something that needs to be shared. "SOME" older models pre 2015 had a cap to prevent this hole from leaking air into the throttle body. But the caps decay and or crack and leak. Like my dads 2013 was doing. Any how, inspect it and if it looks damaged then repair it the best way you can. Prolly not under warranty so get creative. If you can take it off and tap a thread that would be the best way. I'll report back if we come up with something.

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Re: Throttle Body Air Leaking Issue

Postby Boomer » Thu Jun 23, 2016 12:17 am

Good find and very useful to know...

Keep up the good work guys, you are doing this forum and Norton proud!

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Re: Throttle Body Air Leaking Issue

Postby Britfan60 » Thu Jun 23, 2016 11:04 am

Good find. Looks easy enough to find some rubber plug for that.
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Re: Throttle Body Air Leaking Issue

Postby richard-7 » Tue Mar 14, 2017 7:56 am

** BUMP **
1977 Suzuki GT500 2-stroke Cafe Racer
2014 Norton 961 SE #112
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Re: Throttle Body Air Leaking Issue

Postby Raphi » Thu Mar 16, 2017 1:56 am

My 2012 bike even has 2 of these holes in the throttle body and accordingly 2 caps, while one was missing one day...
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Re: Throttle Body Air Leaking Issue

Postby TonyA » Thu Mar 16, 2017 10:02 am

Tap and plug those holes with set (grub) screws and a drop of Loctite. My 2014 (shipped Nov 2014) has the hole plugged with set screw from the factory. Obviously , put this on the list of things to do when the throttle body comes off.

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Re: Throttle Body Air Leaking Issue

Postby TonyA » Sun Mar 19, 2017 8:14 am

Image

A little dusty in there . Notice the grub screw plugging the hole .

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Re: Throttle Body Air Leaking Issue

Postby TonyA » Mon Mar 20, 2017 7:02 am

I will be installing spring clamps on all unclamped hose connections .

Coming next : oil/air separator relocation (to current factory spot) and installation of oil feed line in-line filter (current production factory filter) .

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