i have a 2005 z400. big bore 440 with a ct pipe and proflow intake. it runs perfect , idles perfect.... but i noticed when i ride and i'm going to slow down and let off the throttle it takes a bit longer to die down in rpm's...... any ideas?

 

running lean. try adjusting fuel screw richer 1/4 turn at a time

 

lean you say.... i mean i have it tuned perfectly to CT's specs but who knows i prob could be lean, i just changed the plug didnt notice anything out of ordinary, and i actually put it up a jet size for the break in .....

 

has it all ways done that or is it some thing it only does this time of year ?

 

it has never done it, but one day while i was riding/jumping. i noticed it

 

is it possible that you have a pinched or pulling throttle cable? or maybe dirt and grime in it? you may wanna try blowin wd40 through it

 

could it be my cdi?

 

not usually. if its taking a bit to come down in rpms its usually a carb issue or air filter issue. but anything is possible

 

yeah i need to just get a zilla or a racer like a 92 and just call it a day

 

i like my lt250r but a z400 is an awesome bike