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Boost Leaks

canuck5

Extreme
Joined
May 5, 2007
Messages
94
Location
Sylvan Lake Alberta
Country
Canada
Snowmobile
Yamaha Nytro MTX
I’m curious about spots you have found boost leaks on your sleds. Mine was in a very unlikely spot on inside of charge tube only found it by hooking up my air compressor to it. Was running the evo stage 4 tune at the time 14.8-16psi up at elevation. Anyone else have some on boost side or exhaust side they have found?
 

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Do they rub on something in that spot?
 
Was hearing an exhaust leak Friday, so inspected yesterday morning and found the downpipe broken at the flexible.
 
Was hearing an exhaust leak Friday, so inspected yesterday morning and found the downpipe broken at the flexible.

The boosted nytros use to always fail at the flexible bellows too so can’t say I’m too surprised. A bad enough exhaust leak usually sounds funny and if you cover your exhaust sled will keep running. This and large loss of boost too.
 
It’s on inside of charge tube just before the airbox going to throttle bodies unlikely run spot from what I can see.
So the tubes are just failing there. I run aftermarket charge tubes but was wondering if I should check them for rubbing there. Doesn’t sound like the issue.
 


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