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Old 10-15-2013, 12:53 AM   #5
Beastly Adventurer
Sumi's Avatar
Joined: Mar 2010
Location: Hungary
Oddometer: 1,799
Backfiring into the TB can lead to this. Actually this is the only thing I can imagine that gets carbon buildup inside there:) Didn't your mate notice backfiring into the airbox / cutouts / farts? :)

Anyway.. check the seating of that TB (look for a torn boot) and if the vac. ports on the intakes are OK. (no torn vac. hoses for example)
2005.5 950 Adventure (with 265mm travel suspension)
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