Question about 1994 Yamaha XJ 600 Diversion S
My wife has a R Reg 600 Diversion, when the bike is started from cold it runs up OK but sounds as though it is running on three, the engine will not accelerate, it has a very bad flat spot, the engine will die if the throttle is twisted after starting, if you are riding the machine it holds back when you twist the throttle.
When it is warm this problem disappears, could it be plugs? the bike has been to a dealer but came back worse, they said the carbs were out of balance, don't think so or it would not disappear when hot.
any help would be great, don't want to pull it to bits if I don't have to and I dont want to give it back to a dealer to cost us fortunes, this is quite improtant to my wife as she has just passed her test and needs to get into the swing of it for the summer, but she is worried that the engine will cut out when she is turning right or doing U-turns etc.
Sounds more like a problem with the carburetor's enrichment circuits (1 for each carb; linked by a shaft across the tops of the carbs). These carbs have a separate "well" in the float bowls that fill up via a very small jet pressed into the bottom of the bowls. A brass tube goes down into the "well" to syphon fuel. This circuit easily gets gummed up if not used too often. Try putting some Seafoam, Yamaha CARB-CLEA-N-ER or Techron in the fuel and see if this cleans things up.
Posted on Feb 26, 2009
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Posted on Jan 02, 2017
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