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gs450 carb problem driving me nuts! - "Finally Solved"
Well I got there in the end!
Turns out the carb problem was caused by a 'pin hole' in the petcock diaphragm. I never suspected a faulty petcock as it did not leak when the fuel pipe was removed. Small amounts of fuel (gas) trickled through the hole in the diaphragm down through the vacumm inlet pipe on the carb resulting in that cylinder running rich when the bike was running.
So if there are any gs bikes out there running rich on one cylinder, before you do what I did and check every f%*ing thing you could possibly think of (except the petcock diaphragm), check if the carb running rich is the carb with the smaller petcock pipe attached to it, a possible tell tale sign is when you pull the smaller petcock pipe off the the carb watch for a tiny dribble of fuel coming out the pipe.
Thanks for all the input everyone gave!
Well I got there in the end!
Turns out the carb problem was caused by a 'pin hole' in the petcock diaphragm. I never suspected a faulty petcock as it did not leak when the fuel pipe was removed. Small amounts of fuel (gas) trickled through the hole in the diaphragm down through the vacumm inlet pipe on the carb resulting in that cylinder running rich when the bike was running.
So if there are any gs bikes out there running rich on one cylinder, before you do what I did and check every f%*ing thing you could possibly think of (except the petcock diaphragm), check if the carb running rich is the carb with the smaller petcock pipe attached to it, a possible tell tale sign is when you pull the smaller petcock pipe off the the carb watch for a tiny dribble of fuel coming out the pipe.
Thanks for all the input everyone gave!
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