View Full Version : 05 brute force 750 with IDSX hard to start

01-16-2010, 11:00 PM
I've got a 750 brute force with the supertapp IDSX with 11 disc in it. I changed the jets to what the recommendations said #155 in front and #160 in rear carb and worked good but since i put the K&N filter and the dyna fs ignition box on. It has become hard to start cold and the end cap of the exhaust is really black. The only thing i haven't done is adjust the needle. I've just had the valves adjusted just to make sure that it wasn't the problem of hard to start when cold. I'm not a carb guru so any help will maybe put me in the right direction would appreciated!!!

01-18-2010, 09:29 AM
The carbon (black) on the end-cap indicates a rich condition. Have looked at you spark plugs?
Have you tried adjusting/turning the fuel screw (in or out)? Have you tried removing ALL the discs?