Right cylinder breaks down when reaches running temp.

scottrw86 · Post by **scottrw86** » Thu Feb 10, 2011 1:40 am

I have a 89 kr250 it was running fine then sprung a feul leak. I pulled the carbs off had them cleaned and fitted new gaskets. The bike starts and revs fine very responsive but when i get halfway up the street the right cylinder breaks down, i changed the coil, leads and plugs but makes no difference. Once the bike cools it will start fine. Has anyone heard of this befor.

martin · Post by **martin** » Thu Feb 10, 2011 10:10 am

my guess is its the stator on its way out,
thats how my bike was when my stator started to go.
the bike would be fine and then come to a stop, leave it for a few mins then it would kick in to life.
am sure someone else will come along and tell you what it is

scooble · Post by **scooble** » Fri Feb 11, 2011 9:24 am

try swapping the plug leads over as well as swapping the carbs over to rule put/narrow down the cause

ScottaKR · Post by **ScottaKR** » Fri Feb 11, 2011 9:37 am

If it was running fine before the fuel leak, and the only thing you touched was the carbs, then you should take a good long look at them first. Check that the float height is correct and that it isn't sticking. The hose to the RH carb may even have a bit of a kink in it which could restrict the fuel flow causing the carb to run dry and starving that cylinder.