I have 2005 kawasaki kfx 700 it will not start when cold.It don't matter if you choke it or not.If you crack the throttle just a little bit it sounds like it is trying to start.I replaced the fuel pum

If you are talking about the crankcase vent hose... a very small amount of oil vapor could be considered normal. If it is flat out oil. Check your oil level and see if it is too high. Otherwise it sounds like blow by.

Sounds like not getting petrol, clean petrol tap to get a good flow and clean and strip carburetor the needle and seat could be clogged any way clean and blow out jets and holes with compressed air put back together and away you go.

Carb.

if you jumped time or broke the chain then it sounds like a bent intake valve. you'll have to take the head off to straighten it.

if it broke the timing chain it might've bent the valve

Is your choke working OK? Even in the summer time a cold engine needs a littel choke...more gas than air to get started. But you don't need to keep the choke on for very long in the summer since the engine warms up faster. You could try some carb cleaner or even taken the carb off and cleaning it good because it sounds definitely like a fuel problem so it was a good idea to check the pump and filter.

its called thermal expansion you will find you most like have a connection that is just tight enough to work in when it cold but when you get it warm is opens a little snug down your starter relay connections and don't forget the wiring connections at the fuses also look for and clean all corrosion you may find

try replacing wire from cdi box to coil

It's winter time...so cold weather is present and you'll have to use the choke. Are you using the choke?