Honda bike engine cold start tick tick noise after few seconds gone away normal what is the cause?

SOURCE: Engine ticking noise on cold starts

Sounds like a stuck valve lifter. I'd use some oil additive for unsticking lifters.

SOURCE: rattle noise from engine at start up for a few

The oil pump is not getting oil into the top of the engine quick enough on start up

I have a similar problem with a Mazda

Got over it by adding a can of STP Oil treatment to the engine

That coats the surfaces better than the standard oils and cuts down on the noise and the wear factor

SOURCE: Ticking noise on KA24E engine

change the oil and filter and add some lucos oil treatment you may have a lifter sticking

SOURCE: ticking noise

you need to give us more info about your car, based on your info i would say one of your valve lifters is bleeding off pressure when the engine is off, you can try putting 1/2 qt. of automatic transmission fluid in your engine oil, atf is a good cleaning agent and may clean your lifters up. i have done it many times

SOURCE: Ticking/Tapping when car starts but goes away???

I had what sounds like the exact same problem. It was an exhaust leak from the left (driver's) side exhaust manifold. This engine has a history of the manifold bolts breaking and causing the exhaust leak. The engine is also used on some Dodge vehicles. It sounds like a tick and I almost mistook it for a bad lifter. I took it to the local Jeep dealer who confirmed the exhaust leak. I replaced the left manifold completely and replaced bolts/gaskets on both sides (left/right) and it fixed the problem. Be careful, as the dealer tried to gouge me on the price. You are looking in the ball park of $600 parts/labor. I got parts for $120 and it took the better part of a work day to do the job.