Things to be noted while buying second hand bike

Main thing needed to be verified while buying a second hand bike:
There are many a things which has to be noted while buying a second hand bike. All the things cannot be verified without a mechanic, but there is a very important thing which can be easily noticed and can rate a bike.
This information includes only for a four stroke engine. After starting the bike raise it to full throttle, and notice that you can able to see the silencer emission comes in white coloured, if yes then the problem is very critical and the engine has to be rebored.

                        

In that situation you can ignore that bike or if you are interested much in that, you can minimise the price up to 40%.
Problem:
The problem is that a gap forms between the piston and cylinder. So that the oil enters the combustion chamber and burns with the fuel, because of that the emission comes in white.
Normally in a two stroke engine it is quite normal to have a white emission because the oil is mixed with the fuel itself.
If a black smoke comes from the silencer, don’t want to have a worry about that, that’s all because of the carbon deposition in the silencer and the combustion chamber. That can be repaired by taking that to a gas welding shop.

There are also other serious problems in it. You can also notice some sound from the engine but that cannot be easily noticed by a normal person. A mechanic can notice it weather the noise comes from the crank, gear, or clutch.

If the problem is with the clutch, then there is no need to spend high money in it. But when it comes for a gear or a crank then the centre case of the engine has to be opened and that cost higher money to be spent.

Verification of wheels and tyres also a main thing because the cost of that comes in K’s.