Sounds lean on the pilot. Try turning the air screw in 1/2 a turn or so and see if that helps.
BTW a cold engine will be lean until it warms up. That's why it has a choke to temporarily richen things up until it warms up and starts to operate more efficiently. A high idle (after a minute or so of running) would tend to indicate a little too lean on the pilot circuit.
i recently took my top end off to inspect it and on top off the piston it had black ash carbon like deposits covered on the top. and it also had the same on the head where the piston meets the spark . can anyone tell me what to do cuz im new to all this i only joined the sight today . by the way my name is carl i ride a 91 kdx 250 stock i live in england so go easyon me ha ha ha ha?????????
thanks matt could ya also tell me the desired 2t ml per litre sorry if you guys go by diffrent readings but im english so we use diffrent terms oh by the way what is a good overall setup for my bike
A clean air filter
A fresh sparkplug
A properly jetted carb
Oiled cables
Fresh brake fluid
A clean silencer
A properly adjusted and oiled chain
A well greased suspension and head bearing(s)
Proper tire inflation
Check the torque on all nuts and fasteners
Fresh fluids in the suspension
Fresh coolant
New brake pads
Correct sag
the first thing you need to do is get a repair manual asap it will have almost all of the setting up info that you need and it will also have maitnience info. And if you do a search you will find that alot of your questions are already answered. Hope that helps a little, have fun with the bike.
hi kdx carl i use motul 2 t also because it is a synthetic oil i mix it at 50 ;1 because that is what the manufacturer recamends now my bike still smokes a bit but it does not foul plugs runs great when i do a rebuild the top end looks great. hope this helps as for jet specs thats a tough 1 go to canadian daves web sight just kdx there is a lot of info there that can help you i dont even own a kdx and i have found it very useful . :cool:
thanks matt could ya also tell me the desired 2t ml per litre sorry if you guys go by diffrent readings but im english so we use diffrent terms oh by the way what is a good overall setup for my bike