hard to start

[kwik man]

My 2008 kfx 450 is hard to start. It dose not
madder if it's cold or hot. From day one it has done this. I had the head ported a set of web cams, 14:1 compression piston, fuel intake and
power commander. i had the rocket factory dyno
tune it and it still dose not want to start. Is there a fix for this.

[triple7racing]

Did it do that before you put the cams in it? Sometimes the decompression knob on the cam needs to be shaved off a little. On the aftermarket cams that knob is a little taller which in return holds the valves open longer and makes it harder to start.

[MtnEX]

True... but try this one little thing...


Try adding a little bit of fuel on the bottom.

Say up to 2000 RPM and 0.70v... dunno what you are tuning with.