GS 550 runs rough at 6000 rpm,

Suzuki GS 550 discussion forum:


GS 550 runs rough at 6000 rpm,

GS 550 runs rough at 6000 rpm, 
Don said 2008-06-08 21:52 
 
Trying to tune my 78 GS550. Have cleaned the carbs, air filter, etc. It starts fine and pulls well up to around 6k where it starts to stutter. I can push it pass 6k but it is not very happy about it. The carbs were running too rich and with several adjustment to the pilot screw I have cylinders 1, 3 and 4 running OK (according to plug color). Any ideas on why the 6K rough running? Thanks 
 
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