Join Date: Jan 2012
Location: Sydney, Australia
Motorcycle: Gsx-r AL 7/11 89, Gsx-r 7/11 91, Gsx-r 750W 95, Gsx-r 1100 86, CBR-1000rr 08
Hot start issues. Any ideas?
Tried the search function but for some reason only shows results for 2018
Anyway, finally finished the build and fired it up. Cold start isn't great but I've got it down to having to twist the throttle 3 or 4 times, pull the choke and usually it will start after a couple of goes. Idle mixture is slightly on the rich side. Once it's warmed up. it's an absolute ball tearer, no flatspots and idles well.
Problem is. once I shut it down. it's very difficult to restart. I've tried the idle mixture from slightly rich to lean which doesn't seem to help. I've tried starting with no throttle to slowly opening the throttle, pumping the throttle, slamming shut the throttle but nothing seems to work. I've checked the tank breather which is fine. Spark plugs look slightly rich but not enough to be an issue.
Engine has a weaker than normal crank speed due to the high comp and kicks back a bit when it doesn't fire. Also has a 4 degree advancer
My other 7/11 had a very weak crank and would struggle to start but since converting to 24v start . it's been perfect since. Difference is, it wouldn't start cold or hot which leads me to believe it's a different issue with the new bike
Any ideas appreciated