Kitchen plumbing repair can be done by anyone with average knowledge and skill. Only simple tools are needed. It is not easy though. It will mean that you will get messy and dirty. There will be a lot of crouching, bending and even lying down on the floor.
Due to the extensive use of the sink when washing dishes, it is likely that it will reach a point that it cannot drain properly. This is because of debris, grease, or food particles that get caught inside the drain. For this problem, first try pouring hot water to melt grease and other particles and thus free the drain pipe. If this does not work then you can use chemical drain cleaners available anywhere. These can disintegrate some of the things blocking your drain.
Leaking faucets are also a common problem. You will notice if your faucet is leaking if it drips continuously even after you have turned off the valve. The cause may be a simple gasket that is worn out or your faucets may have corroded.
Check for leaks at the bottom of the sink too. You will usually see the marks left by stagnant water from the leak. It could be puddles, molds and mildew, or other markings. Once you find this you can easily trace where the leak is and see if it can be cured by a pipe sealant.
Pressure is needed to bring water into your home. This pressure may cause pipes to crack or fittings to loosen causing leaks. Check the walls where your pipes pass through for evidence of leaks.
Having a pipe wrench is the first must if you plan to do kitchen plumbing repair. So you can catch dripping water, have some rags and a bucket ready for use. Do not try to do anything you think you cannot handle. If you can no longer handle fixing the problem then it would be best to call a trained plumber to do it for you.