Hyundai: Idle problem, air leaks, narrow gap

Question
When driving or even parked the Idle sometimes just revs high by-itself. Also if I hit a bump on the road the idle revs up by-itslef... Any suggestions to the resolution or part replacement...Thanks

Answer
Hi Tola, sorry it took so long to get back with you. Usually Idle Problems can be attributed to the Idle Control Valve, Carbon Buildup on Inlet Valves, Incorrect Spark Plug or too narrow gap, Valves set too tight, Worn Distributor Cap or Rotor, or intake air leaks.A common problem with these is a sticking air valve which can be cleaned
with carburettor cleaner to make the mechanism work freely again.It's a good idea to take a look at the ICV whenever you have idle problems.  Taking the time to clean the valve and make sure it's operation is unrestriced by dirt, gum, etc, is good preventative maintenance.